Home / 78,405.28-117,612.44-22,241.04

Finding the Fourth Proportional to 78,405.28, 117,612.44 and 22,241.04

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Solution

The fourth proportional to 78,405.28, 117,612.44 and 22,241.04 is: 33,362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,405.28 : 117,612.44 = 22,241.04 : x
  2. Step 2: Convert to fraction form
    78,405.28/117,612.44 = 22,241.04/x
  3. Step 3: Cross multiply
    78,405.28x = 117,612.44 × 22,241.04
  4. Step 4: Simplify right side
    78,405.28x = 2,615,822,982.54
  5. Step 5: Solve for x
    x = 2,615,822,982.54/78,405.28
  6. Step 6: Final answer
    x = 33,362.84

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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.