Home / 91,447.65-137,077.92-61,868.61

Finding the Fourth Proportional to 91,447.65, 137,077.92 and 61,868.61

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Solution

The fourth proportional to 91,447.65, 137,077.92 and 61,868.61 is: 92,739.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,447.65 : 137,077.92 = 61,868.61 : x
  2. Step 2: Convert to fraction form
    91,447.65/137,077.92 = 61,868.61/x
  3. Step 3: Cross multiply
    91,447.65x = 137,077.92 × 61,868.61
  4. Step 4: Simplify right side
    91,447.65x = 8,480,820,372.09
  5. Step 5: Solve for x
    x = 8,480,820,372.09/91,447.65
  6. Step 6: Final answer
    x = 92,739.62

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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.