Home / 54,669.69-81,986.13-20,927.79

Finding the Fourth Proportional to 54,669.69, 81,986.13 and 20,927.79

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Solution

The fourth proportional to 54,669.69, 81,986.13 and 20,927.79 is: 31,384.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,669.69 : 81,986.13 = 20,927.79 : x
  2. Step 2: Convert to fraction form
    54,669.69/81,986.13 = 20,927.79/x
  3. Step 3: Cross multiply
    54,669.69x = 81,986.13 × 20,927.79
  4. Step 4: Simplify right side
    54,669.69x = 1,715,788,511.55
  5. Step 5: Solve for x
    x = 1,715,788,511.55/54,669.69
  6. Step 6: Final answer
    x = 31,384.64

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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.