Home / 67,987.43-101,981.18-25,857.78

Finding the Fourth Proportional to 67,987.43, 101,981.18 and 25,857.78

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Solution

The fourth proportional to 67,987.43, 101,981.18 and 25,857.78 is: 38,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.43 : 101,981.18 = 25,857.78 : x
  2. Step 2: Convert to fraction form
    67,987.43/101,981.18 = 25,857.78/x
  3. Step 3: Cross multiply
    67,987.43x = 101,981.18 × 25,857.78
  4. Step 4: Simplify right side
    67,987.43x = 2,637,007,026.99
  5. Step 5: Solve for x
    x = 2,637,007,026.99/67,987.43
  6. Step 6: Final answer
    x = 38,786.68

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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.