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Finding the Fourth Proportional to 76,687.22, 115,097.27 and 76,509.90

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Solution

The fourth proportional to 76,687.22, 115,097.27 and 76,509.90 is: 114,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,687.22 : 115,097.27 = 76,509.90 : x
  2. Step 2: Convert to fraction form
    76,687.22/115,097.27 = 76,509.90/x
  3. Step 3: Cross multiply
    76,687.22x = 115,097.27 × 76,509.90
  4. Step 4: Simplify right side
    76,687.22x = 8,806,080,235.42
  5. Step 5: Solve for x
    x = 8,806,080,235.42/76,687.22
  6. Step 6: Final answer
    x = 114,831.13

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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.