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Finding the Fourth Proportional to 64,517.64, 96,771.60 and 38,388.68

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Solution

The fourth proportional to 64,517.64, 96,771.60 and 38,388.68 is: 57,580.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,517.64 : 96,771.60 = 38,388.68 : x
  2. Step 2: Convert to fraction form
    64,517.64/96,771.60 = 38,388.68/x
  3. Step 3: Cross multiply
    64,517.64x = 96,771.60 × 38,388.68
  4. Step 4: Simplify right side
    64,517.64x = 3,714,933,985.49
  5. Step 5: Solve for x
    x = 3,714,933,985.49/64,517.64
  6. Step 6: Final answer
    x = 57,580.13

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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.