Home / 67,939.81-101,913.26-20,553.71

Finding the Fourth Proportional to 67,939.81, 101,913.26 and 20,553.71

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Solution

The fourth proportional to 67,939.81, 101,913.26 and 20,553.71 is: 30,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,939.81 : 101,913.26 = 20,553.71 : x
  2. Step 2: Convert to fraction form
    67,939.81/101,913.26 = 20,553.71/x
  3. Step 3: Cross multiply
    67,939.81x = 101,913.26 × 20,553.71
  4. Step 4: Simplify right side
    67,939.81x = 2,094,695,438.91
  5. Step 5: Solve for x
    x = 2,094,695,438.91/67,939.81
  6. Step 6: Final answer
    x = 30,831.63

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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.