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Finding the Fourth Proportional to 109,073.62, 163,672.80 and 49,908.79

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Solution

The fourth proportional to 109,073.62, 163,672.80 and 49,908.79 is: 74,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,073.62 : 163,672.80 = 49,908.79 : x
  2. Step 2: Convert to fraction form
    109,073.62/163,672.80 = 49,908.79/x
  3. Step 3: Cross multiply
    109,073.62x = 163,672.80 × 49,908.79
  4. Step 4: Simplify right side
    109,073.62x = 8,168,711,403.91
  5. Step 5: Solve for x
    x = 8,168,711,403.91/109,073.62
  6. Step 6: Final answer
    x = 74,891.72

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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.