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Finding the Fourth Proportional to 79,493.76, 109,744.05 and 61,304.70

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Solution

The fourth proportional to 79,493.76, 109,744.05 and 61,304.70 is: 84,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,493.76 : 109,744.05 = 61,304.70 : x
  2. Step 2: Convert to fraction form
    79,493.76/109,744.05 = 61,304.70/x
  3. Step 3: Cross multiply
    79,493.76x = 109,744.05 × 61,304.70
  4. Step 4: Simplify right side
    79,493.76x = 6,727,826,062.04
  5. Step 5: Solve for x
    x = 6,727,826,062.04/79,493.76
  6. Step 6: Final answer
    x = 84,633.39

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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.