Home / 39,118,712.55-53,981,122.86-21,713,687.70

Finding the Fourth Proportional to 39,118,712.55, 53,981,122.86 and 21,713,687.70

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Solution

The fourth proportional to 39,118,712.55, 53,981,122.86 and 21,713,687.70 is: 29,963,390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,118,712.55 : 53,981,122.86 = 21,713,687.70 : x
  2. Step 2: Convert to fraction form
    39,118,712.55/53,981,122.86 = 21,713,687.70/x
  3. Step 3: Cross multiply
    39,118,712.55x = 53,981,122.86 × 21,713,687.70
  4. Step 4: Simplify right side
    39,118,712.55x = 1,172,129,243,477,370.75
  5. Step 5: Solve for x
    x = 1,172,129,243,477,370.75/39,118,712.55
  6. Step 6: Final answer
    x = 29,963,390.08

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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.