Home / 90,789.56-136,206.21-28,460.06

Finding the Fourth Proportional to 90,789.56, 136,206.21 and 28,460.06

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Solution

The fourth proportional to 90,789.56, 136,206.21 and 28,460.06 is: 42,696.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,789.56 : 136,206.21 = 28,460.06 : x
  2. Step 2: Convert to fraction form
    90,789.56/136,206.21 = 28,460.06/x
  3. Step 3: Cross multiply
    90,789.56x = 136,206.21 × 28,460.06
  4. Step 4: Simplify right side
    90,789.56x = 3,876,436,908.97
  5. Step 5: Solve for x
    x = 3,876,436,908.97/90,789.56
  6. Step 6: Final answer
    x = 42,696.95

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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.