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Finding the Fourth Proportional to 79,680, 109,958.40 and 44,352

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Solution

The fourth proportional to 79,680, 109,958.40 and 44,352 is: 61,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,680 : 109,958.40 = 44,352 : x
  2. Step 2: Convert to fraction form
    79,680/109,958.40 = 44,352/x
  3. Step 3: Cross multiply
    79,680x = 109,958.40 × 44,352
  4. Step 4: Simplify right side
    79,680x = 4,876,874,956.80
  5. Step 5: Solve for x
    x = 4,876,874,956.80/79,680
  6. Step 6: Final answer
    x = 61,205.76

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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.