Home / 81,715.74-112,791.15-49,450.38

Finding the Fourth Proportional to 81,715.74, 112,791.15 and 49,450.38

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Solution

The fourth proportional to 81,715.74, 112,791.15 and 49,450.38 is: 68,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715.74 : 112,791.15 = 49,450.38 : x
  2. Step 2: Convert to fraction form
    81,715.74/112,791.15 = 49,450.38/x
  3. Step 3: Cross multiply
    81,715.74x = 112,791.15 × 49,450.38
  4. Step 4: Simplify right side
    81,715.74x = 5,577,565,228.14
  5. Step 5: Solve for x
    x = 5,577,565,228.14/81,715.74
  6. Step 6: Final answer
    x = 68,255.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.