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Finding the Fourth Proportional to 80,582.56, 120,873.71 and 21,418.23

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Solution

The fourth proportional to 80,582.56, 120,873.71 and 21,418.23 is: 32,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,582.56 : 120,873.71 = 21,418.23 : x
  2. Step 2: Convert to fraction form
    80,582.56/120,873.71 = 21,418.23/x
  3. Step 3: Cross multiply
    80,582.56x = 120,873.71 × 21,418.23
  4. Step 4: Simplify right side
    80,582.56x = 2,588,901,358.36
  5. Step 5: Solve for x
    x = 2,588,901,358.36/80,582.56
  6. Step 6: Final answer
    x = 32,127.31

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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.