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Finding the Fourth Proportional to 68,269.60, 102,407.60 and 21,526.08

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Solution

The fourth proportional to 68,269.60, 102,407.60 and 21,526.08 is: 32,290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,269.60 : 102,407.60 = 21,526.08 : x
  2. Step 2: Convert to fraction form
    68,269.60/102,407.60 = 21,526.08/x
  3. Step 3: Cross multiply
    68,269.60x = 102,407.60 × 21,526.08
  4. Step 4: Simplify right side
    68,269.60x = 2,204,434,190.21
  5. Step 5: Solve for x
    x = 2,204,434,190.21/68,269.60
  6. Step 6: Final answer
    x = 32,290.13

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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.