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Finding the Fourth Proportional to 68,886.80, 103,339.80 and 29,443.60

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Solution

The fourth proportional to 68,886.80, 103,339.80 and 29,443.60 is: 44,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,886.80 : 103,339.80 = 29,443.60 : x
  2. Step 2: Convert to fraction form
    68,886.80/103,339.80 = 29,443.60/x
  3. Step 3: Cross multiply
    68,886.80x = 103,339.80 × 29,443.60
  4. Step 4: Simplify right side
    68,886.80x = 3,042,695,735.28
  5. Step 5: Solve for x
    x = 3,042,695,735.28/68,886.80
  6. Step 6: Final answer
    x = 44,169.50

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1.5x scale

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.