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Finding the Fourth Proportional to 80,638.88, 111,279.52 and 47,104.80

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Solution

The fourth proportional to 80,638.88, 111,279.52 and 47,104.80 is: 65,003.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,638.88 : 111,279.52 = 47,104.80 : x
  2. Step 2: Convert to fraction form
    80,638.88/111,279.52 = 47,104.80/x
  3. Step 3: Cross multiply
    80,638.88x = 111,279.52 × 47,104.80
  4. Step 4: Simplify right side
    80,638.88x = 5,241,799,533.70
  5. Step 5: Solve for x
    x = 5,241,799,533.70/80,638.88
  6. Step 6: Final answer
    x = 65,003.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.