Home / 78,344.80-117,532.16-25,769.44

Finding the Fourth Proportional to 78,344.80, 117,532.16 and 25,769.44

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Solution

The fourth proportional to 78,344.80, 117,532.16 and 25,769.44 is: 38,659.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344.80 : 117,532.16 = 25,769.44 : x
  2. Step 2: Convert to fraction form
    78,344.80/117,532.16 = 25,769.44/x
  3. Step 3: Cross multiply
    78,344.80x = 117,532.16 × 25,769.44
  4. Step 4: Simplify right side
    78,344.80x = 3,028,737,945.19
  5. Step 5: Solve for x
    x = 3,028,737,945.19/78,344.80
  6. Step 6: Final answer
    x = 38,659.08

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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.