Home / 91,398.24-137,111.76-38,808

Finding the Fourth Proportional to 91,398.24, 137,111.76 and 38,808

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Solution

The fourth proportional to 91,398.24, 137,111.76 and 38,808 is: 58,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,398.24 : 137,111.76 = 38,808 : x
  2. Step 2: Convert to fraction form
    91,398.24/137,111.76 = 38,808/x
  3. Step 3: Cross multiply
    91,398.24x = 137,111.76 × 38,808
  4. Step 4: Simplify right side
    91,398.24x = 5,321,033,182.08
  5. Step 5: Solve for x
    x = 5,321,033,182.08/91,398.24
  6. Step 6: Final answer
    x = 58,218.11

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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.