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Finding the Fourth Proportional to 68,486.47, 102,720.13 and 23,507.12

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Solution

The fourth proportional to 68,486.47, 102,720.13 and 23,507.12 is: 35,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,486.47 : 102,720.13 = 23,507.12 : x
  2. Step 2: Convert to fraction form
    68,486.47/102,720.13 = 23,507.12/x
  3. Step 3: Cross multiply
    68,486.47x = 102,720.13 × 23,507.12
  4. Step 4: Simplify right side
    68,486.47x = 2,414,654,620.36
  5. Step 5: Solve for x
    x = 2,414,654,620.36/68,486.47
  6. Step 6: Final answer
    x = 35,257.40

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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.