Home / 77,139.98-115,687.28-32,766.38

Finding the Fourth Proportional to 77,139.98, 115,687.28 and 32,766.38

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Solution

The fourth proportional to 77,139.98, 115,687.28 and 32,766.38 is: 49,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.98 : 115,687.28 = 32,766.38 : x
  2. Step 2: Convert to fraction form
    77,139.98/115,687.28 = 32,766.38/x
  3. Step 3: Cross multiply
    77,139.98x = 115,687.28 × 32,766.38
  4. Step 4: Simplify right side
    77,139.98x = 3,790,652,881.13
  5. Step 5: Solve for x
    x = 3,790,652,881.13/77,139.98
  6. Step 6: Final answer
    x = 49,139.93

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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.