Home / 67,210.11-100,815.39-19,825.79

Finding the Fourth Proportional to 67,210.11, 100,815.39 and 19,825.79

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Solution

The fourth proportional to 67,210.11, 100,815.39 and 19,825.79 is: 29,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,210.11 : 100,815.39 = 19,825.79 : x
  2. Step 2: Convert to fraction form
    67,210.11/100,815.39 = 19,825.79/x
  3. Step 3: Cross multiply
    67,210.11x = 100,815.39 × 19,825.79
  4. Step 4: Simplify right side
    67,210.11x = 1,998,744,246.83
  5. Step 5: Solve for x
    x = 1,998,744,246.83/67,210.11
  6. Step 6: Final answer
    x = 29,738.74

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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.