Home / 72,413,711.78-99,930,228.17-39,373,972.52

Finding the Fourth Proportional to 72,413,711.78, 99,930,228.17 and 39,373,972.52

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Solution

The fourth proportional to 72,413,711.78, 99,930,228.17 and 39,373,972.52 is: 54,335,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,413,711.78 : 99,930,228.17 = 39,373,972.52 : x
  2. Step 2: Convert to fraction form
    72,413,711.78/99,930,228.17 = 39,373,972.52/x
  3. Step 3: Cross multiply
    72,413,711.78x = 99,930,228.17 × 39,373,972.52
  4. Step 4: Simplify right side
    72,413,711.78x = 3,934,650,057,186,389
  5. Step 5: Solve for x
    x = 3,934,650,057,186,389/72,413,711.78
  6. Step 6: Final answer
    x = 54,335,704.67

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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.