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Finding the Fourth Proportional to 68,344.56, 102,518.40 and 20,960.64

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Solution

The fourth proportional to 68,344.56, 102,518.40 and 20,960.64 is: 31,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,344.56 : 102,518.40 = 20,960.64 : x
  2. Step 2: Convert to fraction form
    68,344.56/102,518.40 = 20,960.64/x
  3. Step 3: Cross multiply
    68,344.56x = 102,518.40 × 20,960.64
  4. Step 4: Simplify right side
    68,344.56x = 2,148,851,275.78
  5. Step 5: Solve for x
    x = 2,148,851,275.78/68,344.56
  6. Step 6: Final answer
    x = 31,441.44

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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.