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Finding the Fourth Proportional to 74,311.60, 111,540.30 and 36,913.90

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Solution

The fourth proportional to 74,311.60, 111,540.30 and 36,913.90 is: 55,407.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,311.60 : 111,540.30 = 36,913.90 : x
  2. Step 2: Convert to fraction form
    74,311.60/111,540.30 = 36,913.90/x
  3. Step 3: Cross multiply
    74,311.60x = 111,540.30 × 36,913.90
  4. Step 4: Simplify right side
    74,311.60x = 4,117,387,480.17
  5. Step 5: Solve for x
    x = 4,117,387,480.17/74,311.60
  6. Step 6: Final answer
    x = 55,407.06

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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.