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Finding the Fourth Proportional to 80,812.69, 121,219.03 and 25,408.69

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Solution

The fourth proportional to 80,812.69, 121,219.03 and 25,408.69 is: 38,113.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,812.69 : 121,219.03 = 25,408.69 : x
  2. Step 2: Convert to fraction form
    80,812.69/121,219.03 = 25,408.69/x
  3. Step 3: Cross multiply
    80,812.69x = 121,219.03 × 25,408.69
  4. Step 4: Simplify right side
    80,812.69x = 3,080,016,484.08
  5. Step 5: Solve for x
    x = 3,080,016,484.08/80,812.69
  6. Step 6: Final answer
    x = 38,113.03

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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.