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Finding the Fourth Proportional to 90,282.74, 135,423.90 and 27,102.78

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Solution

The fourth proportional to 90,282.74, 135,423.90 and 27,102.78 is: 40,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,282.74 : 135,423.90 = 27,102.78 : x
  2. Step 2: Convert to fraction form
    90,282.74/135,423.90 = 27,102.78/x
  3. Step 3: Cross multiply
    90,282.74x = 135,423.90 × 27,102.78
  4. Step 4: Simplify right side
    90,282.74x = 3,670,364,168.44
  5. Step 5: Solve for x
    x = 3,670,364,168.44/90,282.74
  6. Step 6: Final answer
    x = 40,654.11

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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.