Home / 87,642.57-120,971.52-51,845.03

Finding the Fourth Proportional to 87,642.57, 120,971.52 and 51,845.03

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Solution

The fourth proportional to 87,642.57, 120,971.52 and 51,845.03 is: 71,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,642.57 : 120,971.52 = 51,845.03 : x
  2. Step 2: Convert to fraction form
    87,642.57/120,971.52 = 51,845.03/x
  3. Step 3: Cross multiply
    87,642.57x = 120,971.52 × 51,845.03
  4. Step 4: Simplify right side
    87,642.57x = 6,271,772,083.55
  5. Step 5: Solve for x
    x = 6,271,772,083.55/87,642.57
  6. Step 6: Final answer
    x = 71,560.80

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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.