Home / 78,414.62-117,550.64-28,473.26

Finding the Fourth Proportional to 78,414.62, 117,550.64 and 28,473.26

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Solution

The fourth proportional to 78,414.62, 117,550.64 and 28,473.26 is: 42,684.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414.62 : 117,550.64 = 28,473.26 : x
  2. Step 2: Convert to fraction form
    78,414.62/117,550.64 = 28,473.26/x
  3. Step 3: Cross multiply
    78,414.62x = 117,550.64 × 28,473.26
  4. Step 4: Simplify right side
    78,414.62x = 3,347,049,419.32
  5. Step 5: Solve for x
    x = 3,347,049,419.32/78,414.62
  6. Step 6: Final answer
    x = 42,684.00

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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.