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Finding the Fourth Proportional to 78,791.52, 108,750.96 and 45,276.96

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Solution

The fourth proportional to 78,791.52, 108,750.96 and 45,276.96 is: 62,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,791.52 : 108,750.96 = 45,276.96 : x
  2. Step 2: Convert to fraction form
    78,791.52/108,750.96 = 45,276.96/x
  3. Step 3: Cross multiply
    78,791.52x = 108,750.96 × 45,276.96
  4. Step 4: Simplify right side
    78,791.52x = 4,923,912,865.88
  5. Step 5: Solve for x
    x = 4,923,912,865.88/78,791.52
  6. Step 6: Final answer
    x = 62,492.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.