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Finding the Fourth Proportional to 64,581.60, 96,872.40 and 42,463.20

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Solution

The fourth proportional to 64,581.60, 96,872.40 and 42,463.20 is: 63,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,581.60 : 96,872.40 = 42,463.20 : x
  2. Step 2: Convert to fraction form
    64,581.60/96,872.40 = 42,463.20/x
  3. Step 3: Cross multiply
    64,581.60x = 96,872.40 × 42,463.20
  4. Step 4: Simplify right side
    64,581.60x = 4,113,512,095.68
  5. Step 5: Solve for x
    x = 4,113,512,095.68/64,581.60
  6. Step 6: Final answer
    x = 63,694.80

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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.