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Finding the Fourth Proportional to 75,111.17, 112,672.89 and 25,191.68

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Solution

The fourth proportional to 75,111.17, 112,672.89 and 25,191.68 is: 37,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,111.17 : 112,672.89 = 25,191.68 : x
  2. Step 2: Convert to fraction form
    75,111.17/112,672.89 = 25,191.68/x
  3. Step 3: Cross multiply
    75,111.17x = 112,672.89 × 25,191.68
  4. Step 4: Simplify right side
    75,111.17x = 2,838,418,826.19
  5. Step 5: Solve for x
    x = 2,838,418,826.19/75,111.17
  6. Step 6: Final answer
    x = 37,789.57

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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.