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Finding the Fourth Proportional to 54,334.59, 81,494.96 and 21,031.89

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Solution

The fourth proportional to 54,334.59, 81,494.96 and 21,031.89 is: 31,545.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,334.59 : 81,494.96 = 21,031.89 : x
  2. Step 2: Convert to fraction form
    54,334.59/81,494.96 = 21,031.89/x
  3. Step 3: Cross multiply
    54,334.59x = 81,494.96 × 21,031.89
  4. Step 4: Simplify right side
    54,334.59x = 1,713,992,929.11
  5. Step 5: Solve for x
    x = 1,713,992,929.11/54,334.59
  6. Step 6: Final answer
    x = 31,545.15

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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.