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Finding the Fourth Proportional to 90,412.97, 135,606.13 and 23,857.78

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Solution

The fourth proportional to 90,412.97, 135,606.13 and 23,857.78 is: 35,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,412.97 : 135,606.13 = 23,857.78 : x
  2. Step 2: Convert to fraction form
    90,412.97/135,606.13 = 23,857.78/x
  3. Step 3: Cross multiply
    90,412.97x = 135,606.13 × 23,857.78
  4. Step 4: Simplify right side
    90,412.97x = 3,235,260,964.97
  5. Step 5: Solve for x
    x = 3,235,260,964.97/90,412.97
  6. Step 6: Final answer
    x = 35,783.15

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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.