Home / 90,215.38-135,323.07-27,885.88

Finding the Fourth Proportional to 90,215.38, 135,323.07 and 27,885.88

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Solution

The fourth proportional to 90,215.38, 135,323.07 and 27,885.88 is: 41,828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,215.38 : 135,323.07 = 27,885.88 : x
  2. Step 2: Convert to fraction form
    90,215.38/135,323.07 = 27,885.88/x
  3. Step 3: Cross multiply
    90,215.38x = 135,323.07 × 27,885.88
  4. Step 4: Simplify right side
    90,215.38x = 3,773,602,891.25
  5. Step 5: Solve for x
    x = 3,773,602,891.25/90,215.38
  6. Step 6: Final answer
    x = 41,828.82

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Double scale
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Similar ratio
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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.