Home / 78,309.32-117,463.97-19,144.28

Finding the Fourth Proportional to 78,309.32, 117,463.97 and 19,144.28

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Solution

The fourth proportional to 78,309.32, 117,463.97 and 19,144.28 is: 28,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,309.32 : 117,463.97 = 19,144.28 : x
  2. Step 2: Convert to fraction form
    78,309.32/117,463.97 = 19,144.28/x
  3. Step 3: Cross multiply
    78,309.32x = 117,463.97 × 19,144.28
  4. Step 4: Simplify right side
    78,309.32x = 2,248,763,473.11
  5. Step 5: Solve for x
    x = 2,248,763,473.11/78,309.32
  6. Step 6: Final answer
    x = 28,716.42

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1.5x scale

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.