Home / 54,439.29-81,643.14-21,151.53

Finding the Fourth Proportional to 54,439.29, 81,643.14 and 21,151.53

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Solution

The fourth proportional to 54,439.29, 81,643.14 and 21,151.53 is: 31,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,439.29 : 81,643.14 = 21,151.53 : x
  2. Step 2: Convert to fraction form
    54,439.29/81,643.14 = 21,151.53/x
  3. Step 3: Cross multiply
    54,439.29x = 81,643.14 × 21,151.53
  4. Step 4: Simplify right side
    54,439.29x = 1,726,877,325.00
  5. Step 5: Solve for x
    x = 1,726,877,325.00/54,439.29
  6. Step 6: Final answer
    x = 31,721.16

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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.