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Finding the Fourth Proportional to 70,090.98, 96,610.32 and 49,679.88

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Solution

The fourth proportional to 70,090.98, 96,610.32 and 49,679.88 is: 68,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,090.98 : 96,610.32 = 49,679.88 : x
  2. Step 2: Convert to fraction form
    70,090.98/96,610.32 = 49,679.88/x
  3. Step 3: Cross multiply
    70,090.98x = 96,610.32 × 49,679.88
  4. Step 4: Simplify right side
    70,090.98x = 4,799,589,104.36
  5. Step 5: Solve for x
    x = 4,799,589,104.36/70,090.98
  6. Step 6: Final answer
    x = 68,476.56

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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.