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Finding the Fourth Proportional to 71,201.89, 98,257.21 and 39,370.51

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Solution

The fourth proportional to 71,201.89, 98,257.21 and 39,370.51 is: 54,330.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,201.89 : 98,257.21 = 39,370.51 : x
  2. Step 2: Convert to fraction form
    71,201.89/98,257.21 = 39,370.51/x
  3. Step 3: Cross multiply
    71,201.89x = 98,257.21 × 39,370.51
  4. Step 4: Simplify right side
    71,201.89x = 3,868,436,468.88
  5. Step 5: Solve for x
    x = 3,868,436,468.88/71,201.89
  6. Step 6: Final answer
    x = 54,330.53

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1.5x scale

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.