Home / 39,126,206.32-53,992,057.01-21,721,431.15

Finding the Fourth Proportional to 39,126,206.32, 53,992,057.01 and 21,721,431.15

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Solution

The fourth proportional to 39,126,206.32, 53,992,057.01 and 21,721,431.15 is: 29,974,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,126,206.32 : 53,992,057.01 = 21,721,431.15 : x
  2. Step 2: Convert to fraction form
    39,126,206.32/53,992,057.01 = 21,721,431.15/x
  3. Step 3: Cross multiply
    39,126,206.32x = 53,992,057.01 × 21,721,431.15
  4. Step 4: Simplify right side
    39,126,206.32x = 1,172,784,748,880,982.75
  5. Step 5: Solve for x
    x = 1,172,784,748,880,982.75/39,126,206.32
  6. Step 6: Final answer
    x = 29,974,404.86

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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.