Home / 68,554.48-102,842.04-21,165.68

Finding the Fourth Proportional to 68,554.48, 102,842.04 and 21,165.68

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Solution

The fourth proportional to 68,554.48, 102,842.04 and 21,165.68 is: 31,751.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,554.48 : 102,842.04 = 21,165.68 : x
  2. Step 2: Convert to fraction form
    68,554.48/102,842.04 = 21,165.68/x
  3. Step 3: Cross multiply
    68,554.48x = 102,842.04 × 21,165.68
  4. Step 4: Simplify right side
    68,554.48x = 2,176,721,709.19
  5. Step 5: Solve for x
    x = 2,176,721,709.19/68,554.48
  6. Step 6: Final answer
    x = 31,751.71

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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.