Home / 87,205.47-120,380.12-58,949.43

Finding the Fourth Proportional to 87,205.47, 120,380.12 and 58,949.43

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Solution

The fourth proportional to 87,205.47, 120,380.12 and 58,949.43 is: 81,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,205.47 : 120,380.12 = 58,949.43 : x
  2. Step 2: Convert to fraction form
    87,205.47/120,380.12 = 58,949.43/x
  3. Step 3: Cross multiply
    87,205.47x = 120,380.12 × 58,949.43
  4. Step 4: Simplify right side
    87,205.47x = 7,096,339,457.33
  5. Step 5: Solve for x
    x = 7,096,339,457.33/87,205.47
  6. Step 6: Final answer
    x = 81,374.94

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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.