Home / 91,778.24-137,725.76-39,188.16

Finding the Fourth Proportional to 91,778.24, 137,725.76 and 39,188.16

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Solution

The fourth proportional to 91,778.24, 137,725.76 and 39,188.16 is: 58,807.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,778.24 : 137,725.76 = 39,188.16 : x
  2. Step 2: Convert to fraction form
    91,778.24/137,725.76 = 39,188.16/x
  3. Step 3: Cross multiply
    91,778.24x = 137,725.76 × 39,188.16
  4. Step 4: Simplify right side
    91,778.24x = 5,397,219,119.00
  5. Step 5: Solve for x
    x = 5,397,219,119.00/91,778.24
  6. Step 6: Final answer
    x = 58,807.18

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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.