Home / 90,493.42-135,785.40-40,609.18

Finding the Fourth Proportional to 90,493.42, 135,785.40 and 40,609.18

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Solution

The fourth proportional to 90,493.42, 135,785.40 and 40,609.18 is: 60,934.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,493.42 : 135,785.40 = 40,609.18 : x
  2. Step 2: Convert to fraction form
    90,493.42/135,785.40 = 40,609.18/x
  3. Step 3: Cross multiply
    90,493.42x = 135,785.40 × 40,609.18
  4. Step 4: Simplify right side
    90,493.42x = 5,514,133,749.97
  5. Step 5: Solve for x
    x = 5,514,133,749.97/90,493.42
  6. Step 6: Final answer
    x = 60,934.09

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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.