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Finding the Fourth Proportional to 66,203,890.20, 99,246,737.70 and 25,804,978.20

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Solution

The fourth proportional to 66,203,890.20, 99,246,737.70 and 25,804,978.20 is: 38,684,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203,890.20 : 99,246,737.70 = 25,804,978.20 : x
  2. Step 2: Convert to fraction form
    66,203,890.20/99,246,737.70 = 25,804,978.20/x
  3. Step 3: Cross multiply
    66,203,890.20x = 99,246,737.70 × 25,804,978.20
  4. Step 4: Simplify right side
    66,203,890.20x = 2,561,059,902,769,618
  5. Step 5: Solve for x
    x = 2,561,059,902,769,618/66,203,890.20
  6. Step 6: Final answer
    x = 38,684,432.21

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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.