Home / 67,528.13-101,293.56-20,781

Finding the Fourth Proportional to 67,528.13, 101,293.56 and 20,781

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Solution

The fourth proportional to 67,528.13, 101,293.56 and 20,781 is: 31,171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,528.13 : 101,293.56 = 20,781 : x
  2. Step 2: Convert to fraction form
    67,528.13/101,293.56 = 20,781/x
  3. Step 3: Cross multiply
    67,528.13x = 101,293.56 × 20,781
  4. Step 4: Simplify right side
    67,528.13x = 2,104,981,470.36
  5. Step 5: Solve for x
    x = 2,104,981,470.36/67,528.13
  6. Step 6: Final answer
    x = 31,171.92

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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.