Home / 68,921.82-103,388.40-29,479.32

Finding the Fourth Proportional to 68,921.82, 103,388.40 and 29,479.32

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Solution

The fourth proportional to 68,921.82, 103,388.40 and 29,479.32 is: 44,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,921.82 : 103,388.40 = 29,479.32 : x
  2. Step 2: Convert to fraction form
    68,921.82/103,388.40 = 29,479.32/x
  3. Step 3: Cross multiply
    68,921.82x = 103,388.40 × 29,479.32
  4. Step 4: Simplify right side
    68,921.82x = 3,047,819,727.89
  5. Step 5: Solve for x
    x = 3,047,819,727.89/68,921.82
  6. Step 6: Final answer
    x = 44,221.41

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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.