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Finding the Fourth Proportional to 54,655.40, 81,987.90 and 16,713.24

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Solution

The fourth proportional to 54,655.40, 81,987.90 and 16,713.24 is: 25,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,655.40 : 81,987.90 = 16,713.24 : x
  2. Step 2: Convert to fraction form
    54,655.40/81,987.90 = 16,713.24/x
  3. Step 3: Cross multiply
    54,655.40x = 81,987.90 × 16,713.24
  4. Step 4: Simplify right side
    54,655.40x = 1,370,283,449.80
  5. Step 5: Solve for x
    x = 1,370,283,449.80/54,655.40
  6. Step 6: Final answer
    x = 25,071.33

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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.