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Finding the Fourth Proportional to 90,645.50, 135,871.05 and 43,795.10

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Solution

The fourth proportional to 90,645.50, 135,871.05 and 43,795.10 is: 65,645.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,645.50 : 135,871.05 = 43,795.10 : x
  2. Step 2: Convert to fraction form
    90,645.50/135,871.05 = 43,795.10/x
  3. Step 3: Cross multiply
    90,645.50x = 135,871.05 × 43,795.10
  4. Step 4: Simplify right side
    90,645.50x = 5,950,486,221.86
  5. Step 5: Solve for x
    x = 5,950,486,221.86/90,645.50
  6. Step 6: Final answer
    x = 65,645.69

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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.