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Finding the Fourth Proportional to 68,665.30, 102,921.15 and 39,097.30

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Solution

The fourth proportional to 68,665.30, 102,921.15 and 39,097.30 is: 58,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,665.30 : 102,921.15 = 39,097.30 : x
  2. Step 2: Convert to fraction form
    68,665.30/102,921.15 = 39,097.30/x
  3. Step 3: Cross multiply
    68,665.30x = 102,921.15 × 39,097.30
  4. Step 4: Simplify right side
    68,665.30x = 4,023,939,077.90
  5. Step 5: Solve for x
    x = 4,023,939,077.90/68,665.30
  6. Step 6: Final answer
    x = 58,602.22

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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.