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Finding the Fourth Proportional to 90,649.50, 135,877.05 and 43,799.10

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Solution

The fourth proportional to 90,649.50, 135,877.05 and 43,799.10 is: 65,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.50 : 135,877.05 = 43,799.10 : x
  2. Step 2: Convert to fraction form
    90,649.50/135,877.05 = 43,799.10/x
  3. Step 3: Cross multiply
    90,649.50x = 135,877.05 × 43,799.10
  4. Step 4: Simplify right side
    90,649.50x = 5,951,292,500.66
  5. Step 5: Solve for x
    x = 5,951,292,500.66/90,649.50
  6. Step 6: Final answer
    x = 65,651.69

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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.