Home / 87,037.80-120,102.66-51,239.04

Finding the Fourth Proportional to 87,037.80, 120,102.66 and 51,239.04

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Solution

The fourth proportional to 87,037.80, 120,102.66 and 51,239.04 is: 70,704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,037.80 : 120,102.66 = 51,239.04 : x
  2. Step 2: Convert to fraction form
    87,037.80/120,102.66 = 51,239.04/x
  3. Step 3: Cross multiply
    87,037.80x = 120,102.66 × 51,239.04
  4. Step 4: Simplify right side
    87,037.80x = 6,153,944,999.85
  5. Step 5: Solve for x
    x = 6,153,944,999.85/87,037.80
  6. Step 6: Final answer
    x = 70,704.28

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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.