Home / 91,781.24-137,686.26-39,191

Finding the Fourth Proportional to 91,781.24, 137,686.26 and 39,191

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Solution

The fourth proportional to 91,781.24, 137,686.26 and 39,191 is: 58,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,781.24 : 137,686.26 = 39,191 : x
  2. Step 2: Convert to fraction form
    91,781.24/137,686.26 = 39,191/x
  3. Step 3: Cross multiply
    91,781.24x = 137,686.26 × 39,191
  4. Step 4: Simplify right side
    91,781.24x = 5,396,062,215.66
  5. Step 5: Solve for x
    x = 5,396,062,215.66/91,781.24
  6. Step 6: Final answer
    x = 58,792.65

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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.