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Finding the Fourth Proportional to 67,143,781.80, 100,715,672.70 and 66,024,037.80

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Solution

The fourth proportional to 67,143,781.80, 100,715,672.70 and 66,024,037.80 is: 99,036,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,143,781.80 : 100,715,672.70 = 66,024,037.80 : x
  2. Step 2: Convert to fraction form
    67,143,781.80/100,715,672.70 = 66,024,037.80/x
  3. Step 3: Cross multiply
    67,143,781.80x = 100,715,672.70 × 66,024,037.80
  4. Step 4: Simplify right side
    67,143,781.80x = 6,649,655,381,397,228
  5. Step 5: Solve for x
    x = 6,649,655,381,397,228/67,143,781.80
  6. Step 6: Final answer
    x = 99,036,056.70

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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.