Home / 87,615.47-120,909.31-47,329.24

Finding the Fourth Proportional to 87,615.47, 120,909.31 and 47,329.24

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Solution

The fourth proportional to 87,615.47, 120,909.31 and 47,329.24 is: 65,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,615.47 : 120,909.31 = 47,329.24 : x
  2. Step 2: Convert to fraction form
    87,615.47/120,909.31 = 47,329.24/x
  3. Step 3: Cross multiply
    87,615.47x = 120,909.31 × 47,329.24
  4. Step 4: Simplify right side
    87,615.47x = 5,722,545,751.22
  5. Step 5: Solve for x
    x = 5,722,545,751.22/87,615.47
  6. Step 6: Final answer
    x = 65,314.33

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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.