Home / 68,945.81-103,323.03-31,414.16

Finding the Fourth Proportional to 68,945.81, 103,323.03 and 31,414.16

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Solution

The fourth proportional to 68,945.81, 103,323.03 and 31,414.16 is: 47,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,945.81 : 103,323.03 = 31,414.16 : x
  2. Step 2: Convert to fraction form
    68,945.81/103,323.03 = 31,414.16/x
  3. Step 3: Cross multiply
    68,945.81x = 103,323.03 × 31,414.16
  4. Step 4: Simplify right side
    68,945.81x = 3,245,805,679.49
  5. Step 5: Solve for x
    x = 3,245,805,679.49/68,945.81
  6. Step 6: Final answer
    x = 47,077.64

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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.