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Finding the Fourth Proportional to 99,422.40, 149,060.70 and 40,227.60

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Solution

The fourth proportional to 99,422.40, 149,060.70 and 40,227.60 is: 60,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,422.40 : 149,060.70 = 40,227.60 : x
  2. Step 2: Convert to fraction form
    99,422.40/149,060.70 = 40,227.60/x
  3. Step 3: Cross multiply
    99,422.40x = 149,060.70 × 40,227.60
  4. Step 4: Simplify right side
    99,422.40x = 5,996,354,215.32
  5. Step 5: Solve for x
    x = 5,996,354,215.32/99,422.40
  6. Step 6: Final answer
    x = 60,311.90

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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.