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Finding the Fourth Proportional to 71,228.67, 98,297.25 and 39,398.19

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Solution

The fourth proportional to 71,228.67, 98,297.25 and 39,398.19 is: 54,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,228.67 : 98,297.25 = 39,398.19 : x
  2. Step 2: Convert to fraction form
    71,228.67/98,297.25 = 39,398.19/x
  3. Step 3: Cross multiply
    71,228.67x = 98,297.25 × 39,398.19
  4. Step 4: Simplify right side
    71,228.67x = 3,872,733,731.98
  5. Step 5: Solve for x
    x = 3,872,733,731.98/71,228.67
  6. Step 6: Final answer
    x = 54,370.43

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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.