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Finding the Fourth Proportional to 80,963.50, 121,464.70 and 25,559.50

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Solution

The fourth proportional to 80,963.50, 121,464.70 and 25,559.50 is: 38,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,963.50 : 121,464.70 = 25,559.50 : x
  2. Step 2: Convert to fraction form
    80,963.50/121,464.70 = 25,559.50/x
  3. Step 3: Cross multiply
    80,963.50x = 121,464.70 × 25,559.50
  4. Step 4: Simplify right side
    80,963.50x = 3,104,576,999.65
  5. Step 5: Solve for x
    x = 3,104,576,999.65/80,963.50
  6. Step 6: Final answer
    x = 38,345.39

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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.