Home / 54,631.20-81,966.42-21,375.18

Finding the Fourth Proportional to 54,631.20, 81,966.42 and 21,375.18

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Solution

The fourth proportional to 54,631.20, 81,966.42 and 21,375.18 is: 32,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,631.20 : 81,966.42 = 21,375.18 : x
  2. Step 2: Convert to fraction form
    54,631.20/81,966.42 = 21,375.18/x
  3. Step 3: Cross multiply
    54,631.20x = 81,966.42 × 21,375.18
  4. Step 4: Simplify right side
    54,631.20x = 1,752,046,981.46
  5. Step 5: Solve for x
    x = 1,752,046,981.46/54,631.20
  6. Step 6: Final answer
    x = 32,070.45

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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.