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Finding the Fourth Proportional to 65,473.26, 90,348.84 and 38,609.60

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Solution

The fourth proportional to 65,473.26, 90,348.84 and 38,609.60 is: 53,278.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,473.26 : 90,348.84 = 38,609.60 : x
  2. Step 2: Convert to fraction form
    65,473.26/90,348.84 = 38,609.60/x
  3. Step 3: Cross multiply
    65,473.26x = 90,348.84 × 38,609.60
  4. Step 4: Simplify right side
    65,473.26x = 3,488,332,572.86
  5. Step 5: Solve for x
    x = 3,488,332,572.86/65,473.26
  6. Step 6: Final answer
    x = 53,278.74

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1.5x scale

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.