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Finding the Fourth Proportional to 68,836.68, 103,254.84 and 45,457.56

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Solution

The fourth proportional to 68,836.68, 103,254.84 and 45,457.56 is: 68,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,836.68 : 103,254.84 = 45,457.56 : x
  2. Step 2: Convert to fraction form
    68,836.68/103,254.84 = 45,457.56/x
  3. Step 3: Cross multiply
    68,836.68x = 103,254.84 × 45,457.56
  4. Step 4: Simplify right side
    68,836.68x = 4,693,713,084.59
  5. Step 5: Solve for x
    x = 4,693,713,084.59/68,836.68
  6. Step 6: Final answer
    x = 68,186.22

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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.