Home / 77,249.22-115,895.70-45,687.30

Finding the Fourth Proportional to 77,249.22, 115,895.70 and 45,687.30

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Solution

The fourth proportional to 77,249.22, 115,895.70 and 45,687.30 is: 68,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,249.22 : 115,895.70 = 45,687.30 : x
  2. Step 2: Convert to fraction form
    77,249.22/115,895.70 = 45,687.30/x
  3. Step 3: Cross multiply
    77,249.22x = 115,895.70 × 45,687.30
  4. Step 4: Simplify right side
    77,249.22x = 5,294,961,614.61
  5. Step 5: Solve for x
    x = 5,294,961,614.61/77,249.22
  6. Step 6: Final answer
    x = 68,543.88

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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.