Home / 87,046.19-120,149.38-56,836.21

Finding the Fourth Proportional to 87,046.19, 120,149.38 and 56,836.21

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Solution

The fourth proportional to 87,046.19, 120,149.38 and 56,836.21 is: 78,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,046.19 : 120,149.38 = 56,836.21 : x
  2. Step 2: Convert to fraction form
    87,046.19/120,149.38 = 56,836.21/x
  3. Step 3: Cross multiply
    87,046.19x = 120,149.38 × 56,836.21
  4. Step 4: Simplify right side
    87,046.19x = 6,828,834,792.30
  5. Step 5: Solve for x
    x = 6,828,834,792.30/87,046.19
  6. Step 6: Final answer
    x = 78,450.70

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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.