Home / 87,671.09-120,983.68-49,430.30

Finding the Fourth Proportional to 87,671.09, 120,983.68 and 49,430.30

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Solution

The fourth proportional to 87,671.09, 120,983.68 and 49,430.30 is: 68,212.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,671.09 : 120,983.68 = 49,430.30 : x
  2. Step 2: Convert to fraction form
    87,671.09/120,983.68 = 49,430.30/x
  3. Step 3: Cross multiply
    87,671.09x = 120,983.68 × 49,430.30
  4. Step 4: Simplify right side
    87,671.09x = 5,980,259,456.86
  5. Step 5: Solve for x
    x = 5,980,259,456.86/87,671.09
  6. Step 6: Final answer
    x = 68,212.44

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1.5x scale

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.