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Finding the Fourth Proportional to 64,652,272.20, 96,978,408.30 and 40,418,562.60

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Solution

The fourth proportional to 64,652,272.20, 96,978,408.30 and 40,418,562.60 is: 60,627,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,652,272.20 : 96,978,408.30 = 40,418,562.60 : x
  2. Step 2: Convert to fraction form
    64,652,272.20/96,978,408.30 = 40,418,562.60/x
  3. Step 3: Cross multiply
    64,652,272.20x = 96,978,408.30 × 40,418,562.60
  4. Step 4: Simplify right side
    64,652,272.20x = 3,919,727,866,721,909.50
  5. Step 5: Solve for x
    x = 3,919,727,866,721,909.50/64,652,272.20
  6. Step 6: Final answer
    x = 60,627,843.90

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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.