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Finding the Fourth Proportional to 71,372.84, 98,490.26 and 39,539.44

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Solution

The fourth proportional to 71,372.84, 98,490.26 and 39,539.44 is: 54,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,372.84 : 98,490.26 = 39,539.44 : x
  2. Step 2: Convert to fraction form
    71,372.84/98,490.26 = 39,539.44/x
  3. Step 3: Cross multiply
    71,372.84x = 98,490.26 × 39,539.44
  4. Step 4: Simplify right side
    71,372.84x = 3,894,249,725.85
  5. Step 5: Solve for x
    x = 3,894,249,725.85/71,372.84
  6. Step 6: Final answer
    x = 54,562.07

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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.