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Finding the Fourth Proportional to 80,993.80, 121,482.49 and 21,835.45

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Solution

The fourth proportional to 80,993.80, 121,482.49 and 21,835.45 is: 32,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,993.80 : 121,482.49 = 21,835.45 : x
  2. Step 2: Convert to fraction form
    80,993.80/121,482.49 = 21,835.45/x
  3. Step 3: Cross multiply
    80,993.80x = 121,482.49 × 21,835.45
  4. Step 4: Simplify right side
    80,993.80x = 2,652,624,421.65
  5. Step 5: Solve for x
    x = 2,652,624,421.65/80,993.80
  6. Step 6: Final answer
    x = 32,750.96

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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.