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Finding the Fourth Proportional to 68,095.40, 102,143.10 and 21,348.20

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Solution

The fourth proportional to 68,095.40, 102,143.10 and 21,348.20 is: 32,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,095.40 : 102,143.10 = 21,348.20 : x
  2. Step 2: Convert to fraction form
    68,095.40/102,143.10 = 21,348.20/x
  3. Step 3: Cross multiply
    68,095.40x = 102,143.10 × 21,348.20
  4. Step 4: Simplify right side
    68,095.40x = 2,180,571,327.42
  5. Step 5: Solve for x
    x = 2,180,571,327.42/68,095.40
  6. Step 6: Final answer
    x = 32,022.30

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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.