Home / 99,589.20-149,380.20-40,423.20

Finding the Fourth Proportional to 99,589.20, 149,380.20 and 40,423.20

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Solution

The fourth proportional to 99,589.20, 149,380.20 and 40,423.20 is: 60,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,589.20 : 149,380.20 = 40,423.20 : x
  2. Step 2: Convert to fraction form
    99,589.20/149,380.20 = 40,423.20/x
  3. Step 3: Cross multiply
    99,589.20x = 149,380.20 × 40,423.20
  4. Step 4: Simplify right side
    99,589.20x = 6,038,425,700.64
  5. Step 5: Solve for x
    x = 6,038,425,700.64/99,589.20
  6. Step 6: Final answer
    x = 60,633.34

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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.