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Finding the Fourth Proportional to 66,486,679.70, 99,730,019.55 and 59,544,266.90

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Solution

The fourth proportional to 66,486,679.70, 99,730,019.55 and 59,544,266.90 is: 89,316,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486,679.70 : 99,730,019.55 = 59,544,266.90 : x
  2. Step 2: Convert to fraction form
    66,486,679.70/99,730,019.55 = 59,544,266.90/x
  3. Step 3: Cross multiply
    66,486,679.70x = 99,730,019.55 × 59,544,266.90
  4. Step 4: Simplify right side
    66,486,679.70x = 5,938,350,902,027,418
  5. Step 5: Solve for x
    x = 5,938,350,902,027,418/66,486,679.70
  6. Step 6: Final answer
    x = 89,316,400.35

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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.