Home / 90,687.75-136,034.06-28,358.25

Finding the Fourth Proportional to 90,687.75, 136,034.06 and 28,358.25

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Solution

The fourth proportional to 90,687.75, 136,034.06 and 28,358.25 is: 42,538.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.75 : 136,034.06 = 28,358.25 : x
  2. Step 2: Convert to fraction form
    90,687.75/136,034.06 = 28,358.25/x
  3. Step 3: Cross multiply
    90,687.75x = 136,034.06 × 28,358.25
  4. Step 4: Simplify right side
    90,687.75x = 3,857,687,740.20
  5. Step 5: Solve for x
    x = 3,857,687,740.20/90,687.75
  6. Step 6: Final answer
    x = 42,538.13

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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.