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Finding the Fourth Proportional to 68,287.61, 102,431.42 and 21,544.13

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Solution

The fourth proportional to 68,287.61, 102,431.42 and 21,544.13 is: 32,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,287.61 : 102,431.42 = 21,544.13 : x
  2. Step 2: Convert to fraction form
    68,287.61/102,431.42 = 21,544.13/x
  3. Step 3: Cross multiply
    68,287.61x = 102,431.42 × 21,544.13
  4. Step 4: Simplify right side
    68,287.61x = 2,206,795,208.69
  5. Step 5: Solve for x
    x = 2,206,795,208.69/68,287.61
  6. Step 6: Final answer
    x = 32,316.19

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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.