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Finding the Fourth Proportional to 90,449.73, 135,681.08 and 23,889.20

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Solution

The fourth proportional to 90,449.73, 135,681.08 and 23,889.20 is: 35,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,449.73 : 135,681.08 = 23,889.20 : x
  2. Step 2: Convert to fraction form
    90,449.73/135,681.08 = 23,889.20/x
  3. Step 3: Cross multiply
    90,449.73x = 135,681.08 × 23,889.20
  4. Step 4: Simplify right side
    90,449.73x = 3,241,311,658.48
  5. Step 5: Solve for x
    x = 3,241,311,658.48/90,449.73
  6. Step 6: Final answer
    x = 35,835.50

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Double scale
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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.