Home / 76,869.86-115,356.09-26,949.92

Finding the Fourth Proportional to 76,869.86, 115,356.09 and 26,949.92

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Solution

The fourth proportional to 76,869.86, 115,356.09 and 26,949.92 is: 40,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,869.86 : 115,356.09 = 26,949.92 : x
  2. Step 2: Convert to fraction form
    76,869.86/115,356.09 = 26,949.92/x
  3. Step 3: Cross multiply
    76,869.86x = 115,356.09 × 26,949.92
  4. Step 4: Simplify right side
    76,869.86x = 3,108,837,397.01
  5. Step 5: Solve for x
    x = 3,108,837,397.01/76,869.86
  6. Step 6: Final answer
    x = 40,442.87

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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.