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Finding the Fourth Proportional to 80,756.76, 121,154.31 and 25,352.76

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Solution

The fourth proportional to 80,756.76, 121,154.31 and 25,352.76 is: 38,035.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,756.76 : 121,154.31 = 25,352.76 : x
  2. Step 2: Convert to fraction form
    80,756.76/121,154.31 = 25,352.76/x
  3. Step 3: Cross multiply
    80,756.76x = 121,154.31 × 25,352.76
  4. Step 4: Simplify right side
    80,756.76x = 3,071,596,144.40
  5. Step 5: Solve for x
    x = 3,071,596,144.40/80,756.76
  6. Step 6: Final answer
    x = 38,035.16

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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.