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Finding the Fourth Proportional to 68,784.40, 103,116.60 and 26,693.20

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Solution

The fourth proportional to 68,784.40, 103,116.60 and 26,693.20 is: 40,016.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,784.40 : 103,116.60 = 26,693.20 : x
  2. Step 2: Convert to fraction form
    68,784.40/103,116.60 = 26,693.20/x
  3. Step 3: Cross multiply
    68,784.40x = 103,116.60 × 26,693.20
  4. Step 4: Simplify right side
    68,784.40x = 2,752,512,027.12
  5. Step 5: Solve for x
    x = 2,752,512,027.12/68,784.40
  6. Step 6: Final answer
    x = 40,016.52

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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.