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Finding the Fourth Proportional to 115,715.52, 173,527.92 and 40,819.68

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Solution

The fourth proportional to 115,715.52, 173,527.92 and 40,819.68 is: 61,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,715.52 : 173,527.92 = 40,819.68 : x
  2. Step 2: Convert to fraction form
    115,715.52/173,527.92 = 40,819.68/x
  3. Step 3: Cross multiply
    115,715.52x = 173,527.92 × 40,819.68
  4. Step 4: Simplify right side
    115,715.52x = 7,083,354,165.47
  5. Step 5: Solve for x
    x = 7,083,354,165.47/115,715.52
  6. Step 6: Final answer
    x = 61,213.52

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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.