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Finding the Fourth Proportional to 87,329.78, 120,515.04 and 47,585.78

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Solution

The fourth proportional to 87,329.78, 120,515.04 and 47,585.78 is: 65,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,329.78 : 120,515.04 = 47,585.78 : x
  2. Step 2: Convert to fraction form
    87,329.78/120,515.04 = 47,585.78/x
  3. Step 3: Cross multiply
    87,329.78x = 120,515.04 × 47,585.78
  4. Step 4: Simplify right side
    87,329.78x = 5,734,802,180.13
  5. Step 5: Solve for x
    x = 5,734,802,180.13/87,329.78
  6. Step 6: Final answer
    x = 65,668.35

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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.