Home / 83,686.20-125,529.30-21,356.70

Finding the Fourth Proportional to 83,686.20, 125,529.30 and 21,356.70

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Solution

The fourth proportional to 83,686.20, 125,529.30 and 21,356.70 is: 32,035.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,686.20 : 125,529.30 = 21,356.70 : x
  2. Step 2: Convert to fraction form
    83,686.20/125,529.30 = 21,356.70/x
  3. Step 3: Cross multiply
    83,686.20x = 125,529.30 × 21,356.70
  4. Step 4: Simplify right side
    83,686.20x = 2,680,891,601.31
  5. Step 5: Solve for x
    x = 2,680,891,601.31/83,686.20
  6. Step 6: Final answer
    x = 32,035.05

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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.