Home / 76,711.86-115,065.06-26,791.76

Finding the Fourth Proportional to 76,711.86, 115,065.06 and 26,791.76

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Solution

The fourth proportional to 76,711.86, 115,065.06 and 26,791.76 is: 40,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,711.86 : 115,065.06 = 26,791.76 : x
  2. Step 2: Convert to fraction form
    76,711.86/115,065.06 = 26,791.76/x
  3. Step 3: Cross multiply
    76,711.86x = 115,065.06 × 26,791.76
  4. Step 4: Simplify right side
    76,711.86x = 3,082,795,659.10
  5. Step 5: Solve for x
    x = 3,082,795,659.10/76,711.86
  6. Step 6: Final answer
    x = 40,186.69

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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.