Home / 68,723.76-103,134.30-31,288.68

Finding the Fourth Proportional to 68,723.76, 103,134.30 and 31,288.68

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Solution

The fourth proportional to 68,723.76, 103,134.30 and 31,288.68 is: 46,955.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,723.76 : 103,134.30 = 31,288.68 : x
  2. Step 2: Convert to fraction form
    68,723.76/103,134.30 = 31,288.68/x
  3. Step 3: Cross multiply
    68,723.76x = 103,134.30 × 31,288.68
  4. Step 4: Simplify right side
    68,723.76x = 3,226,936,109.72
  5. Step 5: Solve for x
    x = 3,226,936,109.72/68,723.76
  6. Step 6: Final answer
    x = 46,955.17

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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.