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Finding the Fourth Proportional to 80,009.62, 110,408.71 and 47,780.59

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Solution

The fourth proportional to 80,009.62, 110,408.71 and 47,780.59 is: 65,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,009.62 : 110,408.71 = 47,780.59 : x
  2. Step 2: Convert to fraction form
    80,009.62/110,408.71 = 47,780.59/x
  3. Step 3: Cross multiply
    80,009.62x = 110,408.71 × 47,780.59
  4. Step 4: Simplify right side
    80,009.62x = 5,275,393,304.94
  5. Step 5: Solve for x
    x = 5,275,393,304.94/80,009.62
  6. Step 6: Final answer
    x = 65,934.49

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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.