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Finding the Fourth Proportional to 71,710.25, 98,962.70 and 39,447.41

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Solution

The fourth proportional to 71,710.25, 98,962.70 and 39,447.41 is: 54,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,710.25 : 98,962.70 = 39,447.41 : x
  2. Step 2: Convert to fraction form
    71,710.25/98,962.70 = 39,447.41/x
  3. Step 3: Cross multiply
    71,710.25x = 98,962.70 × 39,447.41
  4. Step 4: Simplify right side
    71,710.25x = 3,903,821,509.56
  5. Step 5: Solve for x
    x = 3,903,821,509.56/71,710.25
  6. Step 6: Final answer
    x = 54,438.83

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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.