Home / 68,388.30-102,618-51,743.43

Finding the Fourth Proportional to 68,388.30, 102,618 and 51,743.43

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Solution

The fourth proportional to 68,388.30, 102,618 and 51,743.43 is: 77,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,388.30 : 102,618 = 51,743.43 : x
  2. Step 2: Convert to fraction form
    68,388.30/102,618 = 51,743.43/x
  3. Step 3: Cross multiply
    68,388.30x = 102,618 × 51,743.43
  4. Step 4: Simplify right side
    68,388.30x = 5,309,807,299.74
  5. Step 5: Solve for x
    x = 5,309,807,299.74/68,388.30
  6. Step 6: Final answer
    x = 77,642.04

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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.