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Finding the Fourth Proportional to 80,960.50, 121,460.19 and 25,556.50

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Solution

The fourth proportional to 80,960.50, 121,460.19 and 25,556.50 is: 38,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.50 : 121,460.19 = 25,556.50 : x
  2. Step 2: Convert to fraction form
    80,960.50/121,460.19 = 25,556.50/x
  3. Step 3: Cross multiply
    80,960.50x = 121,460.19 × 25,556.50
  4. Step 4: Simplify right side
    80,960.50x = 3,104,097,345.74
  5. Step 5: Solve for x
    x = 3,104,097,345.74/80,960.50
  6. Step 6: Final answer
    x = 38,340.89

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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.