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Finding the Fourth Proportional to 68,355.60, 102,514.20 and 21,622.80

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Solution

The fourth proportional to 68,355.60, 102,514.20 and 21,622.80 is: 32,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,355.60 : 102,514.20 = 21,622.80 : x
  2. Step 2: Convert to fraction form
    68,355.60/102,514.20 = 21,622.80/x
  3. Step 3: Cross multiply
    68,355.60x = 102,514.20 × 21,622.80
  4. Step 4: Simplify right side
    68,355.60x = 2,216,644,043.76
  5. Step 5: Solve for x
    x = 2,216,644,043.76/68,355.60
  6. Step 6: Final answer
    x = 32,428.13

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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.