Home / 68,514.92-102,780.28-26,385.20

Finding the Fourth Proportional to 68,514.92, 102,780.28 and 26,385.20

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Solution

The fourth proportional to 68,514.92, 102,780.28 and 26,385.20 is: 39,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,514.92 : 102,780.28 = 26,385.20 : x
  2. Step 2: Convert to fraction form
    68,514.92/102,780.28 = 26,385.20/x
  3. Step 3: Cross multiply
    68,514.92x = 102,780.28 × 26,385.20
  4. Step 4: Simplify right side
    68,514.92x = 2,711,878,243.86
  5. Step 5: Solve for x
    x = 2,711,878,243.86/68,514.92
  6. Step 6: Final answer
    x = 39,580.84

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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.