Home / 80,758.08-121,128.62-21,599.73

Finding the Fourth Proportional to 80,758.08, 121,128.62 and 21,599.73

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Solution

The fourth proportional to 80,758.08, 121,128.62 and 21,599.73 is: 32,397.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.08 : 121,128.62 = 21,599.73 : x
  2. Step 2: Convert to fraction form
    80,758.08/121,128.62 = 21,599.73/x
  3. Step 3: Cross multiply
    80,758.08x = 121,128.62 × 21,599.73
  4. Step 4: Simplify right side
    80,758.08x = 2,616,345,379.27
  5. Step 5: Solve for x
    x = 2,616,345,379.27/80,758.08
  6. Step 6: Final answer
    x = 32,397.32

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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.