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Finding the Fourth Proportional to 68,675.84, 102,875.25 and 57,551.30

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Solution

The fourth proportional to 68,675.84, 102,875.25 and 57,551.30 is: 86,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,675.84 : 102,875.25 = 57,551.30 : x
  2. Step 2: Convert to fraction form
    68,675.84/102,875.25 = 57,551.30/x
  3. Step 3: Cross multiply
    68,675.84x = 102,875.25 × 57,551.30
  4. Step 4: Simplify right side
    68,675.84x = 5,920,604,375.33
  5. Step 5: Solve for x
    x = 5,920,604,375.33/68,675.84
  6. Step 6: Final answer
    x = 86,210.88

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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.