Home / 87,830.22-121,205.73-47,543.85

Finding the Fourth Proportional to 87,830.22, 121,205.73 and 47,543.85

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Solution

The fourth proportional to 87,830.22, 121,205.73 and 47,543.85 is: 65,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830.22 : 121,205.73 = 47,543.85 : x
  2. Step 2: Convert to fraction form
    87,830.22/121,205.73 = 47,543.85/x
  3. Step 3: Cross multiply
    87,830.22x = 121,205.73 × 47,543.85
  4. Step 4: Simplify right side
    87,830.22x = 5,762,587,046.26
  5. Step 5: Solve for x
    x = 5,762,587,046.26/87,830.22
  6. Step 6: Final answer
    x = 65,610.53

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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.