Home / 54,424.71-81,640.10-16,989.95

Finding the Fourth Proportional to 54,424.71, 81,640.10 and 16,989.95

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Solution

The fourth proportional to 54,424.71, 81,640.10 and 16,989.95 is: 25,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,424.71 : 81,640.10 = 16,989.95 : x
  2. Step 2: Convert to fraction form
    54,424.71/81,640.10 = 16,989.95/x
  3. Step 3: Cross multiply
    54,424.71x = 81,640.10 × 16,989.95
  4. Step 4: Simplify right side
    54,424.71x = 1,387,061,463.57
  5. Step 5: Solve for x
    x = 1,387,061,463.57/54,424.71
  6. Step 6: Final answer
    x = 25,485.88

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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.