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Finding the Fourth Proportional to 77,350.52, 116,025.89 and 21,191.13

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Solution

The fourth proportional to 77,350.52, 116,025.89 and 21,191.13 is: 31,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,350.52 : 116,025.89 = 21,191.13 : x
  2. Step 2: Convert to fraction form
    77,350.52/116,025.89 = 21,191.13/x
  3. Step 3: Cross multiply
    77,350.52x = 116,025.89 × 21,191.13
  4. Step 4: Simplify right side
    77,350.52x = 2,458,719,612.40
  5. Step 5: Solve for x
    x = 2,458,719,612.40/77,350.52
  6. Step 6: Final answer
    x = 31,786.72

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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.