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Finding the Fourth Proportional to 64,388.52, 88,861.86 and 38,907.54

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Solution

The fourth proportional to 64,388.52, 88,861.86 and 38,907.54 is: 53,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.52 : 88,861.86 = 38,907.54 : x
  2. Step 2: Convert to fraction form
    64,388.52/88,861.86 = 38,907.54/x
  3. Step 3: Cross multiply
    64,388.52x = 88,861.86 × 38,907.54
  4. Step 4: Simplify right side
    64,388.52x = 3,457,396,372.42
  5. Step 5: Solve for x
    x = 3,457,396,372.42/64,388.52
  6. Step 6: Final answer
    x = 53,695.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.