Home / 71,877.30-107,831.81-21,961.29

Finding the Fourth Proportional to 71,877.30, 107,831.81 and 21,961.29

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Solution

The fourth proportional to 71,877.30, 107,831.81 and 21,961.29 is: 32,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,877.30 : 107,831.81 = 21,961.29 : x
  2. Step 2: Convert to fraction form
    71,877.30/107,831.81 = 21,961.29/x
  3. Step 3: Cross multiply
    71,877.30x = 107,831.81 × 21,961.29
  4. Step 4: Simplify right side
    71,877.30x = 2,368,126,109.91
  5. Step 5: Solve for x
    x = 2,368,126,109.91/71,877.30
  6. Step 6: Final answer
    x = 32,946.79

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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.