Home / 87,331.50-120,517.47-47,587.50

Finding the Fourth Proportional to 87,331.50, 120,517.47 and 47,587.50

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Solution

The fourth proportional to 87,331.50, 120,517.47 and 47,587.50 is: 65,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,331.50 : 120,517.47 = 47,587.50 : x
  2. Step 2: Convert to fraction form
    87,331.50/120,517.47 = 47,587.50/x
  3. Step 3: Cross multiply
    87,331.50x = 120,517.47 × 47,587.50
  4. Step 4: Simplify right side
    87,331.50x = 5,735,125,103.63
  5. Step 5: Solve for x
    x = 5,735,125,103.63/87,331.50
  6. Step 6: Final answer
    x = 65,670.75

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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.