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Finding the Fourth Proportional to 80,615.04, 120,924.96 and 21,456.96

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Solution

The fourth proportional to 80,615.04, 120,924.96 and 21,456.96 is: 32,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.04 : 120,924.96 = 21,456.96 : x
  2. Step 2: Convert to fraction form
    80,615.04/120,924.96 = 21,456.96/x
  3. Step 3: Cross multiply
    80,615.04x = 120,924.96 × 21,456.96
  4. Step 4: Simplify right side
    80,615.04x = 2,594,682,029.72
  5. Step 5: Solve for x
    x = 2,594,682,029.72/80,615.04
  6. Step 6: Final answer
    x = 32,186.08

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1.5x scale

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.