Home / 87,015.78-120,090.23-48,781.82

Finding the Fourth Proportional to 87,015.78, 120,090.23 and 48,781.82

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Solution

The fourth proportional to 87,015.78, 120,090.23 and 48,781.82 is: 67,323.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,015.78 : 120,090.23 = 48,781.82 : x
  2. Step 2: Convert to fraction form
    87,015.78/120,090.23 = 48,781.82/x
  3. Step 3: Cross multiply
    87,015.78x = 120,090.23 × 48,781.82
  4. Step 4: Simplify right side
    87,015.78x = 5,858,219,983.62
  5. Step 5: Solve for x
    x = 5,858,219,983.62/87,015.78
  6. Step 6: Final answer
    x = 67,323.65

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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.