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Finding the Fourth Proportional to 80,779.60, 121,174.80 and 27,470.80

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Solution

The fourth proportional to 80,779.60, 121,174.80 and 27,470.80 is: 41,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.60 : 121,174.80 = 27,470.80 : x
  2. Step 2: Convert to fraction form
    80,779.60/121,174.80 = 27,470.80/x
  3. Step 3: Cross multiply
    80,779.60x = 121,174.80 × 27,470.80
  4. Step 4: Simplify right side
    80,779.60x = 3,328,768,695.84
  5. Step 5: Solve for x
    x = 3,328,768,695.84/80,779.60
  6. Step 6: Final answer
    x = 41,208.04

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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.