Home / 61,100.47-84,321.53-38,143.90

Finding the Fourth Proportional to 61,100.47, 84,321.53 and 38,143.90

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Solution

The fourth proportional to 61,100.47, 84,321.53 and 38,143.90 is: 52,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,100.47 : 84,321.53 = 38,143.90 : x
  2. Step 2: Convert to fraction form
    61,100.47/84,321.53 = 38,143.90/x
  3. Step 3: Cross multiply
    61,100.47x = 84,321.53 × 38,143.90
  4. Step 4: Simplify right side
    61,100.47x = 3,216,352,054.59
  5. Step 5: Solve for x
    x = 3,216,352,054.59/61,100.47
  6. Step 6: Final answer
    x = 52,640.38

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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.