Home / 80,823.80-121,235.67-25,419.80

Finding the Fourth Proportional to 80,823.80, 121,235.67 and 25,419.80

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Solution

The fourth proportional to 80,823.80, 121,235.67 and 25,419.80 is: 38,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,823.80 : 121,235.67 = 25,419.80 : x
  2. Step 2: Convert to fraction form
    80,823.80/121,235.67 = 25,419.80/x
  3. Step 3: Cross multiply
    80,823.80x = 121,235.67 × 25,419.80
  4. Step 4: Simplify right side
    80,823.80x = 3,081,786,484.27
  5. Step 5: Solve for x
    x = 3,081,786,484.27/80,823.80
  6. Step 6: Final answer
    x = 38,129.69

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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.