Home / 87,642.83-120,971.87-51,845.28

Finding the Fourth Proportional to 87,642.83, 120,971.87 and 51,845.28

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Solution

The fourth proportional to 87,642.83, 120,971.87 and 51,845.28 is: 71,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,642.83 : 120,971.87 = 51,845.28 : x
  2. Step 2: Convert to fraction form
    87,642.83/120,971.87 = 51,845.28/x
  3. Step 3: Cross multiply
    87,642.83x = 120,971.87 × 51,845.28
  4. Step 4: Simplify right side
    87,642.83x = 6,271,820,601.89
  5. Step 5: Solve for x
    x = 6,271,820,601.89/87,642.83
  6. Step 6: Final answer
    x = 71,561.14

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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.