Home / 91,986.74-138,023.67-38,690.38

Finding the Fourth Proportional to 91,986.74, 138,023.67 and 38,690.38

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Solution

The fourth proportional to 91,986.74, 138,023.67 and 38,690.38 is: 58,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,986.74 : 138,023.67 = 38,690.38 : x
  2. Step 2: Convert to fraction form
    91,986.74/138,023.67 = 38,690.38/x
  3. Step 3: Cross multiply
    91,986.74x = 138,023.67 × 38,690.38
  4. Step 4: Simplify right side
    91,986.74x = 5,340,188,838.29
  5. Step 5: Solve for x
    x = 5,340,188,838.29/91,986.74
  6. Step 6: Final answer
    x = 58,053.90

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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.