Home / 90,490.28-135,717.59-30,512.91

Finding the Fourth Proportional to 90,490.28, 135,717.59 and 30,512.91

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Solution

The fourth proportional to 90,490.28, 135,717.59 and 30,512.91 is: 45,763.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,490.28 : 135,717.59 = 30,512.91 : x
  2. Step 2: Convert to fraction form
    90,490.28/135,717.59 = 30,512.91/x
  3. Step 3: Cross multiply
    90,490.28x = 135,717.59 × 30,512.91
  4. Step 4: Simplify right side
    90,490.28x = 4,141,138,456.52
  5. Step 5: Solve for x
    x = 4,141,138,456.52/90,490.28
  6. Step 6: Final answer
    x = 45,763.35

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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.