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Finding the Fourth Proportional to 71,062.40, 98,064.30 and 39,230.66

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Solution

The fourth proportional to 71,062.40, 98,064.30 and 39,230.66 is: 54,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.40 : 98,064.30 = 39,230.66 : x
  2. Step 2: Convert to fraction form
    71,062.40/98,064.30 = 39,230.66/x
  3. Step 3: Cross multiply
    71,062.40x = 98,064.30 × 39,230.66
  4. Step 4: Simplify right side
    71,062.40x = 3,847,127,211.44
  5. Step 5: Solve for x
    x = 3,847,127,211.44/71,062.40
  6. Step 6: Final answer
    x = 54,137.31

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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.