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Finding the Fourth Proportional to 68,987.61, 103,394.85 and 29,498.37

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Solution

The fourth proportional to 68,987.61, 103,394.85 and 29,498.37 is: 44,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987.61 : 103,394.85 = 29,498.37 : x
  2. Step 2: Convert to fraction form
    68,987.61/103,394.85 = 29,498.37/x
  3. Step 3: Cross multiply
    68,987.61x = 103,394.85 × 29,498.37
  4. Step 4: Simplify right side
    68,987.61x = 3,049,979,541.39
  5. Step 5: Solve for x
    x = 3,049,979,541.39/68,987.61
  6. Step 6: Final answer
    x = 44,210.54

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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.