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Finding the Fourth Proportional to 74,675.95, 111,755.58 and 71,575.87

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Solution

The fourth proportional to 74,675.95, 111,755.58 and 71,575.87 is: 107,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,675.95 : 111,755.58 = 71,575.87 : x
  2. Step 2: Convert to fraction form
    74,675.95/111,755.58 = 71,575.87/x
  3. Step 3: Cross multiply
    74,675.95x = 111,755.58 × 71,575.87
  4. Step 4: Simplify right side
    74,675.95x = 7,999,002,865.85
  5. Step 5: Solve for x
    x = 7,999,002,865.85/74,675.95
  6. Step 6: Final answer
    x = 107,116.18

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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.