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Finding the Fourth Proportional to 79,129.64, 118,612.44 and 49,479.41

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Solution

The fourth proportional to 79,129.64, 118,612.44 and 49,479.41 is: 74,167.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.64 : 118,612.44 = 49,479.41 : x
  2. Step 2: Convert to fraction form
    79,129.64/118,612.44 = 49,479.41/x
  3. Step 3: Cross multiply
    79,129.64x = 118,612.44 × 49,479.41
  4. Step 4: Simplify right side
    79,129.64x = 5,868,872,956.80
  5. Step 5: Solve for x
    x = 5,868,872,956.80/79,129.64
  6. Step 6: Final answer
    x = 74,167.83

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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.