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Finding the Fourth Proportional to 80,305.71, 120,460.53 and 26,998.47

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Solution

The fourth proportional to 80,305.71, 120,460.53 and 26,998.47 is: 40,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,305.71 : 120,460.53 = 26,998.47 : x
  2. Step 2: Convert to fraction form
    80,305.71/120,460.53 = 26,998.47/x
  3. Step 3: Cross multiply
    80,305.71x = 120,460.53 × 26,998.47
  4. Step 4: Simplify right side
    80,305.71x = 3,252,250,005.39
  5. Step 5: Solve for x
    x = 3,252,250,005.39/80,305.71
  6. Step 6: Final answer
    x = 40,498.37

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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.