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Finding the Fourth Proportional to 76,754.52, 115,155.05 and 39,341.12

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Solution

The fourth proportional to 76,754.52, 115,155.05 and 39,341.12 is: 59,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,754.52 : 115,155.05 = 39,341.12 : x
  2. Step 2: Convert to fraction form
    76,754.52/115,155.05 = 39,341.12/x
  3. Step 3: Cross multiply
    76,754.52x = 115,155.05 × 39,341.12
  4. Step 4: Simplify right side
    76,754.52x = 4,530,327,868.18
  5. Step 5: Solve for x
    x = 4,530,327,868.18/76,754.52
  6. Step 6: Final answer
    x = 59,023.60

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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.