Home / 67,399.20-101,111.76-20,652.48

Finding the Fourth Proportional to 67,399.20, 101,111.76 and 20,652.48

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Solution

The fourth proportional to 67,399.20, 101,111.76 and 20,652.48 is: 30,982.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,399.20 : 101,111.76 = 20,652.48 : x
  2. Step 2: Convert to fraction form
    67,399.20/101,111.76 = 20,652.48/x
  3. Step 3: Cross multiply
    67,399.20x = 101,111.76 × 20,652.48
  4. Step 4: Simplify right side
    67,399.20x = 2,088,208,601.16
  5. Step 5: Solve for x
    x = 2,088,208,601.16/67,399.20
  6. Step 6: Final answer
    x = 30,982.69

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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.