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Finding the Fourth Proportional to 87,301.76, 120,476.42 and 47,557.76

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Solution

The fourth proportional to 87,301.76, 120,476.42 and 47,557.76 is: 65,629.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,301.76 : 120,476.42 = 47,557.76 : x
  2. Step 2: Convert to fraction form
    87,301.76/120,476.42 = 47,557.76/x
  3. Step 3: Cross multiply
    87,301.76x = 120,476.42 × 47,557.76
  4. Step 4: Simplify right side
    87,301.76x = 5,729,588,668.02
  5. Step 5: Solve for x
    x = 5,729,588,668.02/87,301.76
  6. Step 6: Final answer
    x = 65,629.70

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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.