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Finding the Fourth Proportional to 68,937.36, 103,387.14 and 19,005.72

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Solution

The fourth proportional to 68,937.36, 103,387.14 and 19,005.72 is: 28,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,937.36 : 103,387.14 = 19,005.72 : x
  2. Step 2: Convert to fraction form
    68,937.36/103,387.14 = 19,005.72/x
  3. Step 3: Cross multiply
    68,937.36x = 103,387.14 × 19,005.72
  4. Step 4: Simplify right side
    68,937.36x = 1,964,947,034.44
  5. Step 5: Solve for x
    x = 1,964,947,034.44/68,937.36
  6. Step 6: Final answer
    x = 28,503.37

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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.