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Finding the Fourth Proportional to 43,481.80, 65,265.90 and 21,320.20

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Solution

The fourth proportional to 43,481.80, 65,265.90 and 21,320.20 is: 32,001.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,481.80 : 65,265.90 = 21,320.20 : x
  2. Step 2: Convert to fraction form
    43,481.80/65,265.90 = 21,320.20/x
  3. Step 3: Cross multiply
    43,481.80x = 65,265.90 × 21,320.20
  4. Step 4: Simplify right side
    43,481.80x = 1,391,482,041.18
  5. Step 5: Solve for x
    x = 1,391,482,041.18/43,481.80
  6. Step 6: Final answer
    x = 32,001.48

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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.