Home / 83,743.20-125,612.64-20,563.92

Finding the Fourth Proportional to 83,743.20, 125,612.64 and 20,563.92

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Solution

The fourth proportional to 83,743.20, 125,612.64 and 20,563.92 is: 30,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,743.20 : 125,612.64 = 20,563.92 : x
  2. Step 2: Convert to fraction form
    83,743.20/125,612.64 = 20,563.92/x
  3. Step 3: Cross multiply
    83,743.20x = 125,612.64 × 20,563.92
  4. Step 4: Simplify right side
    83,743.20x = 2,583,088,279.95
  5. Step 5: Solve for x
    x = 2,583,088,279.95/83,743.20
  6. Step 6: Final answer
    x = 30,845.35

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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.