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Finding the Fourth Proportional to 79,937.96, 110,211.90 and 65,544.80

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Solution

The fourth proportional to 79,937.96, 110,211.90 and 65,544.80 is: 90,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,937.96 : 110,211.90 = 65,544.80 : x
  2. Step 2: Convert to fraction form
    79,937.96/110,211.90 = 65,544.80/x
  3. Step 3: Cross multiply
    79,937.96x = 110,211.90 × 65,544.80
  4. Step 4: Simplify right side
    79,937.96x = 7,223,816,943.12
  5. Step 5: Solve for x
    x = 7,223,816,943.12/79,937.96
  6. Step 6: Final answer
    x = 90,367.79

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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.