Home / 85,605.13-118,143.92-49,307.78

Finding the Fourth Proportional to 85,605.13, 118,143.92 and 49,307.78

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Solution

The fourth proportional to 85,605.13, 118,143.92 and 49,307.78 is: 68,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605.13 : 118,143.92 = 49,307.78 : x
  2. Step 2: Convert to fraction form
    85,605.13/118,143.92 = 49,307.78/x
  3. Step 3: Cross multiply
    85,605.13x = 118,143.92 × 49,307.78
  4. Step 4: Simplify right side
    85,605.13x = 5,825,414,415.70
  5. Step 5: Solve for x
    x = 5,825,414,415.70/85,605.13
  6. Step 6: Final answer
    x = 68,049.83

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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.