Home / 39,486,362,155.62-54,491,285,396.34-21,421,878,367.56

Finding the Fourth Proportional to 39,486,362,155.62, 54,491,285,396.34 and 21,421,878,367.56

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Solution

The fourth proportional to 39,486,362,155.62, 54,491,285,396.34 and 21,421,878,367.56 is: 29,562,249,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486,362,155.62 : 54,491,285,396.34 = 21,421,878,367.56 : x
  2. Step 2: Convert to fraction form
    39,486,362,155.62/54,491,285,396.34 = 21,421,878,367.56/x
  3. Step 3: Cross multiply
    39,486,362,155.62x = 54,491,285,396.34 × 21,421,878,367.56
  4. Step 4: Simplify right side
    39,486,362,155.62x = 1,167,305,687,852,393,955,328
  5. Step 5: Solve for x
    x = 1,167,305,687,852,393,955,328/39,486,362,155.62
  6. Step 6: Final answer
    x = 29,562,249,448.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.