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Finding the Fourth Proportional to 65,308.32, 90,125.84 and 38,452

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Solution

The fourth proportional to 65,308.32, 90,125.84 and 38,452 is: 53,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,308.32 : 90,125.84 = 38,452 : x
  2. Step 2: Convert to fraction form
    65,308.32/90,125.84 = 38,452/x
  3. Step 3: Cross multiply
    65,308.32x = 90,125.84 × 38,452
  4. Step 4: Simplify right side
    65,308.32x = 3,465,518,799.68
  5. Step 5: Solve for x
    x = 3,465,518,799.68/65,308.32
  6. Step 6: Final answer
    x = 53,063.97

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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.