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Finding the Fourth Proportional to 90,644.50, 135,869.55 and 43,794.10

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Solution

The fourth proportional to 90,644.50, 135,869.55 and 43,794.10 is: 65,644.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,644.50 : 135,869.55 = 43,794.10 : x
  2. Step 2: Convert to fraction form
    90,644.50/135,869.55 = 43,794.10/x
  3. Step 3: Cross multiply
    90,644.50x = 135,869.55 × 43,794.10
  4. Step 4: Simplify right side
    90,644.50x = 5,950,284,659.66
  5. Step 5: Solve for x
    x = 5,950,284,659.66/90,644.50
  6. Step 6: Final answer
    x = 65,644.19

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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.