Home / 80,769.30-121,283.55-54,590.10

Finding the Fourth Proportional to 80,769.30, 121,283.55 and 54,590.10

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Solution

The fourth proportional to 80,769.30, 121,283.55 and 54,590.10 is: 81,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,769.30 : 121,283.55 = 54,590.10 : x
  2. Step 2: Convert to fraction form
    80,769.30/121,283.55 = 54,590.10/x
  3. Step 3: Cross multiply
    80,769.30x = 121,283.55 × 54,590.10
  4. Step 4: Simplify right side
    80,769.30x = 6,620,881,122.86
  5. Step 5: Solve for x
    x = 6,620,881,122.86/80,769.30
  6. Step 6: Final answer
    x = 81,972.74

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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.