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Finding the Fourth Proportional to 76,600.61, 115,008.56 and 39,187.52

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Solution

The fourth proportional to 76,600.61, 115,008.56 and 39,187.52 is: 58,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.61 : 115,008.56 = 39,187.52 : x
  2. Step 2: Convert to fraction form
    76,600.61/115,008.56 = 39,187.52/x
  3. Step 3: Cross multiply
    76,600.61x = 115,008.56 × 39,187.52
  4. Step 4: Simplify right side
    76,600.61x = 4,506,900,245.17
  5. Step 5: Solve for x
    x = 4,506,900,245.17/76,600.61
  6. Step 6: Final answer
    x = 58,836.35

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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.