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Finding the Fourth Proportional to 68,038.31, 93,892.87 and 39,744.20

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Solution

The fourth proportional to 68,038.31, 93,892.87 and 39,744.20 is: 54,847.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,038.31 : 93,892.87 = 39,744.20 : x
  2. Step 2: Convert to fraction form
    68,038.31/93,892.87 = 39,744.20/x
  3. Step 3: Cross multiply
    68,038.31x = 93,892.87 × 39,744.20
  4. Step 4: Simplify right side
    68,038.31x = 3,731,697,288.27
  5. Step 5: Solve for x
    x = 3,731,697,288.27/68,038.31
  6. Step 6: Final answer
    x = 54,847.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.