Home / 76,864.52-115,287.24-20,709.02

Finding the Fourth Proportional to 76,864.52, 115,287.24 and 20,709.02

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Solution

The fourth proportional to 76,864.52, 115,287.24 and 20,709.02 is: 31,060.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,864.52 : 115,287.24 = 20,709.02 : x
  2. Step 2: Convert to fraction form
    76,864.52/115,287.24 = 20,709.02/x
  3. Step 3: Cross multiply
    76,864.52x = 115,287.24 × 20,709.02
  4. Step 4: Simplify right side
    76,864.52x = 2,387,485,758.90
  5. Step 5: Solve for x
    x = 2,387,485,758.90/76,864.52
  6. Step 6: Final answer
    x = 31,060.96

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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.