Home / 80,890.56-121,355.16-25,486.56

Finding the Fourth Proportional to 80,890.56, 121,355.16 and 25,486.56

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Solution

The fourth proportional to 80,890.56, 121,355.16 and 25,486.56 is: 38,235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.56 : 121,355.16 = 25,486.56 : x
  2. Step 2: Convert to fraction form
    80,890.56/121,355.16 = 25,486.56/x
  3. Step 3: Cross multiply
    80,890.56x = 121,355.16 × 25,486.56
  4. Step 4: Simplify right side
    80,890.56x = 3,092,925,566.65
  5. Step 5: Solve for x
    x = 3,092,925,566.65/80,890.56
  6. Step 6: Final answer
    x = 38,235.93

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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.