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Finding the Fourth Proportional to 60,320.70, 90,481.05 and 45,351.90

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Solution

The fourth proportional to 60,320.70, 90,481.05 and 45,351.90 is: 68,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,320.70 : 90,481.05 = 45,351.90 : x
  2. Step 2: Convert to fraction form
    60,320.70/90,481.05 = 45,351.90/x
  3. Step 3: Cross multiply
    60,320.70x = 90,481.05 × 45,351.90
  4. Step 4: Simplify right side
    60,320.70x = 4,103,487,531.50
  5. Step 5: Solve for x
    x = 4,103,487,531.50/60,320.70
  6. Step 6: Final answer
    x = 68,027.85

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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.