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Finding the Fourth Proportional to 90,235.68, 135,353.52 and 27,904.80

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Solution

The fourth proportional to 90,235.68, 135,353.52 and 27,904.80 is: 41,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,235.68 : 135,353.52 = 27,904.80 : x
  2. Step 2: Convert to fraction form
    90,235.68/135,353.52 = 27,904.80/x
  3. Step 3: Cross multiply
    90,235.68x = 135,353.52 × 27,904.80
  4. Step 4: Simplify right side
    90,235.68x = 3,777,012,904.90
  5. Step 5: Solve for x
    x = 3,777,012,904.90/90,235.68
  6. Step 6: Final answer
    x = 41,857.20

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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.