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Finding the Fourth Proportional to 79,114.80, 109,178.40 and 43,304.80

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Solution

The fourth proportional to 79,114.80, 109,178.40 and 43,304.80 is: 59,760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,114.80 : 109,178.40 = 43,304.80 : x
  2. Step 2: Convert to fraction form
    79,114.80/109,178.40 = 43,304.80/x
  3. Step 3: Cross multiply
    79,114.80x = 109,178.40 × 43,304.80
  4. Step 4: Simplify right side
    79,114.80x = 4,727,948,776.32
  5. Step 5: Solve for x
    x = 4,727,948,776.32/79,114.80
  6. Step 6: Final answer
    x = 59,760.61

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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.