Home / 90,304.12-135,465.78-27,979.48

Finding the Fourth Proportional to 90,304.12, 135,465.78 and 27,979.48

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Solution

The fourth proportional to 90,304.12, 135,465.78 and 27,979.48 is: 41,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304.12 : 135,465.78 = 27,979.48 : x
  2. Step 2: Convert to fraction form
    90,304.12/135,465.78 = 27,979.48/x
  3. Step 3: Cross multiply
    90,304.12x = 135,465.78 × 27,979.48
  4. Step 4: Simplify right side
    90,304.12x = 3,790,262,082.19
  5. Step 5: Solve for x
    x = 3,790,262,082.19/90,304.12
  6. Step 6: Final answer
    x = 41,972.19

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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.