Home / 67,210.38-100,821.84-19,825.51

Finding the Fourth Proportional to 67,210.38, 100,821.84 and 19,825.51

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Solution

The fourth proportional to 67,210.38, 100,821.84 and 19,825.51 is: 29,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,210.38 : 100,821.84 = 19,825.51 : x
  2. Step 2: Convert to fraction form
    67,210.38/100,821.84 = 19,825.51/x
  3. Step 3: Cross multiply
    67,210.38x = 100,821.84 × 19,825.51
  4. Step 4: Simplify right side
    67,210.38x = 1,998,844,397.14
  5. Step 5: Solve for x
    x = 1,998,844,397.14/67,210.38
  6. Step 6: Final answer
    x = 29,740.12

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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.