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Finding the Fourth Proportional to 68,326.40, 102,515.20 and 26,803.20

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Solution

The fourth proportional to 68,326.40, 102,515.20 and 26,803.20 is: 40,214.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,326.40 : 102,515.20 = 26,803.20 : x
  2. Step 2: Convert to fraction form
    68,326.40/102,515.20 = 26,803.20/x
  3. Step 3: Cross multiply
    68,326.40x = 102,515.20 × 26,803.20
  4. Step 4: Simplify right side
    68,326.40x = 2,747,735,408.64
  5. Step 5: Solve for x
    x = 2,747,735,408.64/68,326.40
  6. Step 6: Final answer
    x = 40,214.84

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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.