Home / 87,108.04-120,214.33-51,321.90

Finding the Fourth Proportional to 87,108.04, 120,214.33 and 51,321.90

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Solution

The fourth proportional to 87,108.04, 120,214.33 and 51,321.90 is: 70,827.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,108.04 : 120,214.33 = 51,321.90 : x
  2. Step 2: Convert to fraction form
    87,108.04/120,214.33 = 51,321.90/x
  3. Step 3: Cross multiply
    87,108.04x = 120,214.33 × 51,321.90
  4. Step 4: Simplify right side
    87,108.04x = 6,169,628,145.33
  5. Step 5: Solve for x
    x = 6,169,628,145.33/87,108.04
  6. Step 6: Final answer
    x = 70,827.31

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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.