Home / 87,081.40-120,171-48,840.94

Finding the Fourth Proportional to 87,081.40, 120,171 and 48,840.94

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Solution

The fourth proportional to 87,081.40, 120,171 and 48,840.94 is: 67,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081.40 : 120,171 = 48,840.94 : x
  2. Step 2: Convert to fraction form
    87,081.40/120,171 = 48,840.94/x
  3. Step 3: Cross multiply
    87,081.40x = 120,171 × 48,840.94
  4. Step 4: Simplify right side
    87,081.40x = 5,869,264,600.74
  5. Step 5: Solve for x
    x = 5,869,264,600.74/87,081.40
  6. Step 6: Final answer
    x = 67,399.75

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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.