Home / 90,661.62-136,007.01-38,086.14

Finding the Fourth Proportional to 90,661.62, 136,007.01 and 38,086.14

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Solution

The fourth proportional to 90,661.62, 136,007.01 and 38,086.14 is: 57,135.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,661.62 : 136,007.01 = 38,086.14 : x
  2. Step 2: Convert to fraction form
    90,661.62/136,007.01 = 38,086.14/x
  3. Step 3: Cross multiply
    90,661.62x = 136,007.01 × 38,086.14
  4. Step 4: Simplify right side
    90,661.62x = 5,179,982,023.84
  5. Step 5: Solve for x
    x = 5,179,982,023.84/90,661.62
  6. Step 6: Final answer
    x = 57,135.33

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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.