Home / 80,784.60-121,182.30-27,475.80

Finding the Fourth Proportional to 80,784.60, 121,182.30 and 27,475.80

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Solution

The fourth proportional to 80,784.60, 121,182.30 and 27,475.80 is: 41,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,784.60 : 121,182.30 = 27,475.80 : x
  2. Step 2: Convert to fraction form
    80,784.60/121,182.30 = 27,475.80/x
  3. Step 3: Cross multiply
    80,784.60x = 121,182.30 × 27,475.80
  4. Step 4: Simplify right side
    80,784.60x = 3,329,580,638.34
  5. Step 5: Solve for x
    x = 3,329,580,638.34/80,784.60
  6. Step 6: Final answer
    x = 41,215.54

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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.