Home / 68,921.33-103,378.14-18,319.01

Finding the Fourth Proportional to 68,921.33, 103,378.14 and 18,319.01

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Solution

The fourth proportional to 68,921.33, 103,378.14 and 18,319.01 is: 27,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,921.33 : 103,378.14 = 18,319.01 : x
  2. Step 2: Convert to fraction form
    68,921.33/103,378.14 = 18,319.01/x
  3. Step 3: Cross multiply
    68,921.33x = 103,378.14 × 18,319.01
  4. Step 4: Simplify right side
    68,921.33x = 1,893,784,663.55
  5. Step 5: Solve for x
    x = 1,893,784,663.55/68,921.33
  6. Step 6: Final answer
    x = 27,477.48

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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.