Home / 78,452.46-118,105.56-71,477.28

Finding the Fourth Proportional to 78,452.46, 118,105.56 and 71,477.28

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Solution

The fourth proportional to 78,452.46, 118,105.56 and 71,477.28 is: 107,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,452.46 : 118,105.56 = 71,477.28 : x
  2. Step 2: Convert to fraction form
    78,452.46/118,105.56 = 71,477.28/x
  3. Step 3: Cross multiply
    78,452.46x = 118,105.56 × 71,477.28
  4. Step 4: Simplify right side
    78,452.46x = 8,441,864,181.68
  5. Step 5: Solve for x
    x = 8,441,864,181.68/78,452.46
  6. Step 6: Final answer
    x = 107,604.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.