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Finding the Fourth Proportional to 79,318.78, 109,463.35 and 47,481.52

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Solution

The fourth proportional to 79,318.78, 109,463.35 and 47,481.52 is: 65,526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,318.78 : 109,463.35 = 47,481.52 : x
  2. Step 2: Convert to fraction form
    79,318.78/109,463.35 = 47,481.52/x
  3. Step 3: Cross multiply
    79,318.78x = 109,463.35 × 47,481.52
  4. Step 4: Simplify right side
    79,318.78x = 5,197,486,242.29
  5. Step 5: Solve for x
    x = 5,197,486,242.29/79,318.78
  6. Step 6: Final answer
    x = 65,526.55

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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.