Home / 77,278.92-115,959.42-30,532.20

Finding the Fourth Proportional to 77,278.92, 115,959.42 and 30,532.20

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Solution

The fourth proportional to 77,278.92, 115,959.42 and 30,532.20 is: 45,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,278.92 : 115,959.42 = 30,532.20 : x
  2. Step 2: Convert to fraction form
    77,278.92/115,959.42 = 30,532.20/x
  3. Step 3: Cross multiply
    77,278.92x = 115,959.42 × 30,532.20
  4. Step 4: Simplify right side
    77,278.92x = 3,540,496,203.32
  5. Step 5: Solve for x
    x = 3,540,496,203.32/77,278.92
  6. Step 6: Final answer
    x = 45,814.51

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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.