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Finding the Fourth Proportional to 77,449.20, 115,882.20 and 51,205.20

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Solution

The fourth proportional to 77,449.20, 115,882.20 and 51,205.20 is: 76,615.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,449.20 : 115,882.20 = 51,205.20 : x
  2. Step 2: Convert to fraction form
    77,449.20/115,882.20 = 51,205.20/x
  3. Step 3: Cross multiply
    77,449.20x = 115,882.20 × 51,205.20
  4. Step 4: Simplify right side
    77,449.20x = 5,933,771,227.44
  5. Step 5: Solve for x
    x = 5,933,771,227.44/77,449.20
  6. Step 6: Final answer
    x = 76,615.01

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1.5x scale

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.