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Finding the Fourth Proportional to 80,766.35, 121,149.66 and 21,602.03

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Solution

The fourth proportional to 80,766.35, 121,149.66 and 21,602.03 is: 32,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.35 : 121,149.66 = 21,602.03 : x
  2. Step 2: Convert to fraction form
    80,766.35/121,149.66 = 21,602.03/x
  3. Step 3: Cross multiply
    80,766.35x = 121,149.66 × 21,602.03
  4. Step 4: Simplify right side
    80,766.35x = 2,617,078,589.81
  5. Step 5: Solve for x
    x = 2,617,078,589.81/80,766.35
  6. Step 6: Final answer
    x = 32,403.08

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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.