Home / 87,642.32-120,971.18-51,844.78

Finding the Fourth Proportional to 87,642.32, 120,971.18 and 51,844.78

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Solution

The fourth proportional to 87,642.32, 120,971.18 and 51,844.78 is: 71,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,642.32 : 120,971.18 = 51,844.78 : x
  2. Step 2: Convert to fraction form
    87,642.32/120,971.18 = 51,844.78/x
  3. Step 3: Cross multiply
    87,642.32x = 120,971.18 × 51,844.78
  4. Step 4: Simplify right side
    87,642.32x = 6,271,724,213.44
  5. Step 5: Solve for x
    x = 6,271,724,213.44/87,642.32
  6. Step 6: Final answer
    x = 71,560.45

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1.5x scale

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.