Home / 71,852,420.79-99,156,377.07-38,812,668.21

Finding the Fourth Proportional to 71,852,420.79, 99,156,377.07 and 38,812,668.21

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Solution

The fourth proportional to 71,852,420.79, 99,156,377.07 and 38,812,668.21 is: 53,561,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,852,420.79 : 99,156,377.07 = 38,812,668.21 : x
  2. Step 2: Convert to fraction form
    71,852,420.79/99,156,377.07 = 38,812,668.21/x
  3. Step 3: Cross multiply
    71,852,420.79x = 99,156,377.07 × 38,812,668.21
  4. Step 4: Simplify right side
    71,852,420.79x = 3,848,523,564,123,562
  5. Step 5: Solve for x
    x = 3,848,523,564,123,562/71,852,420.79
  6. Step 6: Final answer
    x = 53,561,501.78

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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.