Home / 76,864.26-115,246.70-30,121.86

Finding the Fourth Proportional to 76,864.26, 115,246.70 and 30,121.86

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Solution

The fourth proportional to 76,864.26, 115,246.70 and 30,121.86 is: 45,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,864.26 : 115,246.70 = 30,121.86 : x
  2. Step 2: Convert to fraction form
    76,864.26/115,246.70 = 30,121.86/x
  3. Step 3: Cross multiply
    76,864.26x = 115,246.70 × 30,121.86
  4. Step 4: Simplify right side
    76,864.26x = 3,471,444,461.93
  5. Step 5: Solve for x
    x = 3,471,444,461.93/76,864.26
  6. Step 6: Final answer
    x = 45,163.31

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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.