Home / 71,640,561.52-107,462,008.68-20,522,381.68

Finding the Fourth Proportional to 71,640,561.52, 107,462,008.68 and 20,522,381.68

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Solution

The fourth proportional to 71,640,561.52, 107,462,008.68 and 20,522,381.68 is: 30,783,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640,561.52 : 107,462,008.68 = 20,522,381.68 : x
  2. Step 2: Convert to fraction form
    71,640,561.52/107,462,008.68 = 20,522,381.68/x
  3. Step 3: Cross multiply
    71,640,561.52x = 107,462,008.68 × 20,522,381.68
  4. Step 4: Simplify right side
    71,640,561.52x = 2,205,376,358,230,433
  5. Step 5: Solve for x
    x = 2,205,376,358,230,433/71,640,561.52
  6. Step 6: Final answer
    x = 30,783,906.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.