Home / 55,217.39-82,839.31-17,780.99

Finding the Fourth Proportional to 55,217.39, 82,839.31 and 17,780.99

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Solution

The fourth proportional to 55,217.39, 82,839.31 and 17,780.99 is: 26,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,217.39 : 82,839.31 = 17,780.99 : x
  2. Step 2: Convert to fraction form
    55,217.39/82,839.31 = 17,780.99/x
  3. Step 3: Cross multiply
    55,217.39x = 82,839.31 × 17,780.99
  4. Step 4: Simplify right side
    55,217.39x = 1,472,964,484.07
  5. Step 5: Solve for x
    x = 1,472,964,484.07/55,217.39
  6. Step 6: Final answer
    x = 26,675.74

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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.