Home / 87,670.11-120,951.51-53,651.33

Finding the Fourth Proportional to 87,670.11, 120,951.51 and 53,651.33

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Solution

The fourth proportional to 87,670.11, 120,951.51 and 53,651.33 is: 74,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,670.11 : 120,951.51 = 53,651.33 : x
  2. Step 2: Convert to fraction form
    87,670.11/120,951.51 = 53,651.33/x
  3. Step 3: Cross multiply
    87,670.11x = 120,951.51 × 53,651.33
  4. Step 4: Simplify right side
    87,670.11x = 6,489,208,772.25
  5. Step 5: Solve for x
    x = 6,489,208,772.25/87,670.11
  6. Step 6: Final answer
    x = 74,018.49

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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.