Home / 71,628.16-107,442.72-21,712.12

Finding the Fourth Proportional to 71,628.16, 107,442.72 and 21,712.12

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Solution

The fourth proportional to 71,628.16, 107,442.72 and 21,712.12 is: 32,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,628.16 : 107,442.72 = 21,712.12 : x
  2. Step 2: Convert to fraction form
    71,628.16/107,442.72 = 21,712.12/x
  3. Step 3: Cross multiply
    71,628.16x = 107,442.72 × 21,712.12
  4. Step 4: Simplify right side
    71,628.16x = 2,332,809,229.77
  5. Step 5: Solve for x
    x = 2,332,809,229.77/71,628.16
  6. Step 6: Final answer
    x = 32,568.33

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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.