Home / 77,279.20-115,825.20-32,812.60

Finding the Fourth Proportional to 77,279.20, 115,825.20 and 32,812.60

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Solution

The fourth proportional to 77,279.20, 115,825.20 and 32,812.60 is: 49,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.20 : 115,825.20 = 32,812.60 : x
  2. Step 2: Convert to fraction form
    77,279.20/115,825.20 = 32,812.60/x
  3. Step 3: Cross multiply
    77,279.20x = 115,825.20 × 32,812.60
  4. Step 4: Simplify right side
    77,279.20x = 3,800,525,957.52
  5. Step 5: Solve for x
    x = 3,800,525,957.52/77,279.20
  6. Step 6: Final answer
    x = 49,179.16

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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.