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Finding the Fourth Proportional to 80,357.58, 120,544.47 and 21,197.34

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Solution

The fourth proportional to 80,357.58, 120,544.47 and 21,197.34 is: 31,798.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,357.58 : 120,544.47 = 21,197.34 : x
  2. Step 2: Convert to fraction form
    80,357.58/120,544.47 = 21,197.34/x
  3. Step 3: Cross multiply
    80,357.58x = 120,544.47 × 21,197.34
  4. Step 4: Simplify right side
    80,357.58x = 2,555,222,115.71
  5. Step 5: Solve for x
    x = 2,555,222,115.71/80,357.58
  6. Step 6: Final answer
    x = 31,798.15

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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.