Home / 81,255.15-121,583.16-49,252.86

Finding the Fourth Proportional to 81,255.15, 121,583.16 and 49,252.86

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Solution

The fourth proportional to 81,255.15, 121,583.16 and 49,252.86 is: 73,697.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255.15 : 121,583.16 = 49,252.86 : x
  2. Step 2: Convert to fraction form
    81,255.15/121,583.16 = 49,252.86/x
  3. Step 3: Cross multiply
    81,255.15x = 121,583.16 × 49,252.86
  4. Step 4: Simplify right side
    81,255.15x = 5,988,318,357.84
  5. Step 5: Solve for x
    x = 5,988,318,357.84/81,255.15
  6. Step 6: Final answer
    x = 73,697.71

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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.