Home / 90,819.36-136,032.12-43,974

Finding the Fourth Proportional to 90,819.36, 136,032.12 and 43,974

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Solution

The fourth proportional to 90,819.36, 136,032.12 and 43,974 is: 65,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,819.36 : 136,032.12 = 43,974 : x
  2. Step 2: Convert to fraction form
    90,819.36/136,032.12 = 43,974/x
  3. Step 3: Cross multiply
    90,819.36x = 136,032.12 × 43,974
  4. Step 4: Simplify right side
    90,819.36x = 5,981,876,444.88
  5. Step 5: Solve for x
    x = 5,981,876,444.88/90,819.36
  6. Step 6: Final answer
    x = 65,865.65

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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.