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Finding the Fourth Proportional to 71,926.80, 107,938.80 and 25,180.08

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Solution

The fourth proportional to 71,926.80, 107,938.80 and 25,180.08 is: 37,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,926.80 : 107,938.80 = 25,180.08 : x
  2. Step 2: Convert to fraction form
    71,926.80/107,938.80 = 25,180.08/x
  3. Step 3: Cross multiply
    71,926.80x = 107,938.80 × 25,180.08
  4. Step 4: Simplify right side
    71,926.80x = 2,717,907,619.10
  5. Step 5: Solve for x
    x = 2,717,907,619.10/71,926.80
  6. Step 6: Final answer
    x = 37,787.13

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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.