Home / 78,282.44-117,422.14-19,116.52

Finding the Fourth Proportional to 78,282.44, 117,422.14 and 19,116.52

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Solution

The fourth proportional to 78,282.44, 117,422.14 and 19,116.52 is: 28,674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282.44 : 117,422.14 = 19,116.52 : x
  2. Step 2: Convert to fraction form
    78,282.44/117,422.14 = 19,116.52/x
  3. Step 3: Cross multiply
    78,282.44x = 117,422.14 × 19,116.52
  4. Step 4: Simplify right side
    78,282.44x = 2,244,702,687.75
  5. Step 5: Solve for x
    x = 2,244,702,687.75/78,282.44
  6. Step 6: Final answer
    x = 28,674.41

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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.