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Finding the Fourth Proportional to 64,248.60, 96,372.90 and 40,891.80

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Solution

The fourth proportional to 64,248.60, 96,372.90 and 40,891.80 is: 61,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,248.60 : 96,372.90 = 40,891.80 : x
  2. Step 2: Convert to fraction form
    64,248.60/96,372.90 = 40,891.80/x
  3. Step 3: Cross multiply
    64,248.60x = 96,372.90 × 40,891.80
  4. Step 4: Simplify right side
    64,248.60x = 3,940,861,352.22
  5. Step 5: Solve for x
    x = 3,940,861,352.22/64,248.60
  6. Step 6: Final answer
    x = 61,337.70

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1.5x scale

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.