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Finding the Fourth Proportional to 78,475.80, 117,519.30 and 62,923.80

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Solution

The fourth proportional to 78,475.80, 117,519.30 and 62,923.80 is: 94,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,475.80 : 117,519.30 = 62,923.80 : x
  2. Step 2: Convert to fraction form
    78,475.80/117,519.30 = 62,923.80/x
  3. Step 3: Cross multiply
    78,475.80x = 117,519.30 × 62,923.80
  4. Step 4: Simplify right side
    78,475.80x = 7,394,760,929.34
  5. Step 5: Solve for x
    x = 7,394,760,929.34/78,475.80
  6. Step 6: Final answer
    x = 94,229.83

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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.