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Finding the Fourth Proportional to 54,159.90, 81,207.45 and 27,915.90

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Solution

The fourth proportional to 54,159.90, 81,207.45 and 27,915.90 is: 41,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,159.90 : 81,207.45 = 27,915.90 : x
  2. Step 2: Convert to fraction form
    54,159.90/81,207.45 = 27,915.90/x
  3. Step 3: Cross multiply
    54,159.90x = 81,207.45 × 27,915.90
  4. Step 4: Simplify right side
    54,159.90x = 2,266,979,053.46
  5. Step 5: Solve for x
    x = 2,266,979,053.46/54,159.90
  6. Step 6: Final answer
    x = 41,857.15

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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.