Home / 83,992.50-125,987.18-20,812.77

Finding the Fourth Proportional to 83,992.50, 125,987.18 and 20,812.77

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Solution

The fourth proportional to 83,992.50, 125,987.18 and 20,812.77 is: 31,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,992.50 : 125,987.18 = 20,812.77 : x
  2. Step 2: Convert to fraction form
    83,992.50/125,987.18 = 20,812.77/x
  3. Step 3: Cross multiply
    83,992.50x = 125,987.18 × 20,812.77
  4. Step 4: Simplify right side
    83,992.50x = 2,622,142,252.32
  5. Step 5: Solve for x
    x = 2,622,142,252.32/83,992.50
  6. Step 6: Final answer
    x = 31,218.77

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.