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Finding the Fourth Proportional to 87,579.88, 120,866.38 and 48,820.16

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Solution

The fourth proportional to 87,579.88, 120,866.38 and 48,820.16 is: 67,375.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.88 : 120,866.38 = 48,820.16 : x
  2. Step 2: Convert to fraction form
    87,579.88/120,866.38 = 48,820.16/x
  3. Step 3: Cross multiply
    87,579.88x = 120,866.38 × 48,820.16
  4. Step 4: Simplify right side
    87,579.88x = 5,900,716,010.22
  5. Step 5: Solve for x
    x = 5,900,716,010.22/87,579.88
  6. Step 6: Final answer
    x = 67,375.25

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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.