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Finding the Fourth Proportional to 64,652,279.20, 96,978,418.80 and 40,418,569.60

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Solution

The fourth proportional to 64,652,279.20, 96,978,418.80 and 40,418,569.60 is: 60,627,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,652,279.20 : 96,978,418.80 = 40,418,569.60 : x
  2. Step 2: Convert to fraction form
    64,652,279.20/96,978,418.80 = 40,418,569.60/x
  3. Step 3: Cross multiply
    64,652,279.20x = 96,978,418.80 × 40,418,569.60
  4. Step 4: Simplify right side
    64,652,279.20x = 3,919,728,969,965,748.50
  5. Step 5: Solve for x
    x = 3,919,728,969,965,748.50/64,652,279.20
  6. Step 6: Final answer
    x = 60,627,854.40

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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.