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Finding the Fourth Proportional to 78,227.44, 117,339.91 and 19,063.01

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Solution

The fourth proportional to 78,227.44, 117,339.91 and 19,063.01 is: 28,594.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,227.44 : 117,339.91 = 19,063.01 : x
  2. Step 2: Convert to fraction form
    78,227.44/117,339.91 = 19,063.01/x
  3. Step 3: Cross multiply
    78,227.44x = 117,339.91 × 19,063.01
  4. Step 4: Simplify right side
    78,227.44x = 2,236,851,877.73
  5. Step 5: Solve for x
    x = 2,236,851,877.73/78,227.44
  6. Step 6: Final answer
    x = 28,594.21

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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.