Home / 80,717.30-111,403.80-50,514.86

Finding the Fourth Proportional to 80,717.30, 111,403.80 and 50,514.86

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Solution

The fourth proportional to 80,717.30, 111,403.80 and 50,514.86 is: 69,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,717.30 : 111,403.80 = 50,514.86 : x
  2. Step 2: Convert to fraction form
    80,717.30/111,403.80 = 50,514.86/x
  3. Step 3: Cross multiply
    80,717.30x = 111,403.80 × 50,514.86
  4. Step 4: Simplify right side
    80,717.30x = 5,627,547,360.47
  5. Step 5: Solve for x
    x = 5,627,547,360.47/80,717.30
  6. Step 6: Final answer
    x = 69,719.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.