Home / 90,020.57-135,030.78-27,691.07

Finding the Fourth Proportional to 90,020.57, 135,030.78 and 27,691.07

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Solution

The fourth proportional to 90,020.57, 135,030.78 and 27,691.07 is: 41,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.57 : 135,030.78 = 27,691.07 : x
  2. Step 2: Convert to fraction form
    90,020.57/135,030.78 = 27,691.07/x
  3. Step 3: Cross multiply
    90,020.57x = 135,030.78 × 27,691.07
  4. Step 4: Simplify right side
    90,020.57x = 3,739,146,105.98
  5. Step 5: Solve for x
    x = 3,739,146,105.98/90,020.57
  6. Step 6: Final answer
    x = 41,536.58

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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.