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Finding the Fourth Proportional to 80,496.42, 120,746.92 and 21,332.06

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Solution

The fourth proportional to 80,496.42, 120,746.92 and 21,332.06 is: 31,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,496.42 : 120,746.92 = 21,332.06 : x
  2. Step 2: Convert to fraction form
    80,496.42/120,746.92 = 21,332.06/x
  3. Step 3: Cross multiply
    80,496.42x = 120,746.92 × 21,332.06
  4. Step 4: Simplify right side
    80,496.42x = 2,575,780,542.26
  5. Step 5: Solve for x
    x = 2,575,780,542.26/80,496.42
  6. Step 6: Final answer
    x = 31,998.70

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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.