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Finding the Fourth Proportional to 64,472.60, 96,708.42 and 45,418.80

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Solution

The fourth proportional to 64,472.60, 96,708.42 and 45,418.80 is: 68,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,472.60 : 96,708.42 = 45,418.80 : x
  2. Step 2: Convert to fraction form
    64,472.60/96,708.42 = 45,418.80/x
  3. Step 3: Cross multiply
    64,472.60x = 96,708.42 × 45,418.80
  4. Step 4: Simplify right side
    64,472.60x = 4,392,380,386.30
  5. Step 5: Solve for x
    x = 4,392,380,386.30/64,472.60
  6. Step 6: Final answer
    x = 68,127.87

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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.