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Finding the Fourth Proportional to 68,400.31, 102,756.16 and 49,483.30

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Solution

The fourth proportional to 68,400.31, 102,756.16 and 49,483.30 is: 74,337.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,400.31 : 102,756.16 = 49,483.30 : x
  2. Step 2: Convert to fraction form
    68,400.31/102,756.16 = 49,483.30/x
  3. Step 3: Cross multiply
    68,400.31x = 102,756.16 × 49,483.30
  4. Step 4: Simplify right side
    68,400.31x = 5,084,713,892.13
  5. Step 5: Solve for x
    x = 5,084,713,892.13/68,400.31
  6. Step 6: Final answer
    x = 74,337.59

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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.