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Finding the Fourth Proportional to 79,079.43, 118,487.91 and 55,656.66

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Solution

The fourth proportional to 79,079.43, 118,487.91 and 55,656.66 is: 83,392.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,079.43 : 118,487.91 = 55,656.66 : x
  2. Step 2: Convert to fraction form
    79,079.43/118,487.91 = 55,656.66/x
  3. Step 3: Cross multiply
    79,079.43x = 118,487.91 × 55,656.66
  4. Step 4: Simplify right side
    79,079.43x = 6,594,641,320.98
  5. Step 5: Solve for x
    x = 6,594,641,320.98/79,079.43
  6. Step 6: Final answer
    x = 83,392.63

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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.