Home / 68,829.36-103,231.66-18,228.70

Finding the Fourth Proportional to 68,829.36, 103,231.66 and 18,228.70

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Solution

The fourth proportional to 68,829.36, 103,231.66 and 18,228.70 is: 27,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,829.36 : 103,231.66 = 18,228.70 : x
  2. Step 2: Convert to fraction form
    68,829.36/103,231.66 = 18,228.70/x
  3. Step 3: Cross multiply
    68,829.36x = 103,231.66 × 18,228.70
  4. Step 4: Simplify right side
    68,829.36x = 1,881,778,960.64
  5. Step 5: Solve for x
    x = 1,881,778,960.64/68,829.36
  6. Step 6: Final answer
    x = 27,339.77

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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.