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Finding the Fourth Proportional to 87,297.67, 120,485.28 and 51,496.48

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Solution

The fourth proportional to 87,297.67, 120,485.28 and 51,496.48 is: 71,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,297.67 : 120,485.28 = 51,496.48 : x
  2. Step 2: Convert to fraction form
    87,297.67/120,485.28 = 51,496.48/x
  3. Step 3: Cross multiply
    87,297.67x = 120,485.28 × 51,496.48
  4. Step 4: Simplify right side
    87,297.67x = 6,204,567,811.81
  5. Step 5: Solve for x
    x = 6,204,567,811.81/87,297.67
  6. Step 6: Final answer
    x = 71,073.69

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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.