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Finding the Fourth Proportional to 71,697,952.96, 98,942,722.88 and 40,758,123.76

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Solution

The fourth proportional to 71,697,952.96, 98,942,722.88 and 40,758,123.76 is: 56,245,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,697,952.96 : 98,942,722.88 = 40,758,123.76 : x
  2. Step 2: Convert to fraction form
    71,697,952.96/98,942,722.88 = 40,758,123.76/x
  3. Step 3: Cross multiply
    71,697,952.96x = 98,942,722.88 × 40,758,123.76
  4. Step 4: Simplify right side
    71,697,952.96x = 4,032,719,744,294,423
  5. Step 5: Solve for x
    x = 4,032,719,744,294,423/71,697,952.96
  6. Step 6: Final answer
    x = 56,245,953.72

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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.