Home / 77,630.20-107,129.79-43,640.57

Finding the Fourth Proportional to 77,630.20, 107,129.79 and 43,640.57

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Solution

The fourth proportional to 77,630.20, 107,129.79 and 43,640.57 is: 60,224.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,630.20 : 107,129.79 = 43,640.57 : x
  2. Step 2: Convert to fraction form
    77,630.20/107,129.79 = 43,640.57/x
  3. Step 3: Cross multiply
    77,630.20x = 107,129.79 × 43,640.57
  4. Step 4: Simplify right side
    77,630.20x = 4,675,205,367.40
  5. Step 5: Solve for x
    x = 4,675,205,367.40/77,630.20
  6. Step 6: Final answer
    x = 60,224.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.