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Finding the Fourth Proportional to 68,258.68, 102,398.96 and 20,232.16

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Solution

The fourth proportional to 68,258.68, 102,398.96 and 20,232.16 is: 30,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,258.68 : 102,398.96 = 20,232.16 : x
  2. Step 2: Convert to fraction form
    68,258.68/102,398.96 = 20,232.16/x
  3. Step 3: Cross multiply
    68,258.68x = 102,398.96 × 20,232.16
  4. Step 4: Simplify right side
    68,258.68x = 2,071,752,142.55
  5. Step 5: Solve for x
    x = 2,071,752,142.55/68,258.68
  6. Step 6: Final answer
    x = 30,351.48

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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.