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Finding the Fourth Proportional to 78,843.88, 118,284.65 and 26,253.82

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Solution

The fourth proportional to 78,843.88, 118,284.65 and 26,253.82 is: 39,387.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,843.88 : 118,284.65 = 26,253.82 : x
  2. Step 2: Convert to fraction form
    78,843.88/118,284.65 = 26,253.82/x
  3. Step 3: Cross multiply
    78,843.88x = 118,284.65 × 26,253.82
  4. Step 4: Simplify right side
    78,843.88x = 3,105,424,172.58
  5. Step 5: Solve for x
    x = 3,105,424,172.58/78,843.88
  6. Step 6: Final answer
    x = 39,387.00

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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.