Home / 87,671.57-131,521.46-30,761.28

Finding the Fourth Proportional to 87,671.57, 131,521.46 and 30,761.28

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Solution

The fourth proportional to 87,671.57, 131,521.46 and 30,761.28 is: 46,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,671.57 : 131,521.46 = 30,761.28 : x
  2. Step 2: Convert to fraction form
    87,671.57/131,521.46 = 30,761.28/x
  3. Step 3: Cross multiply
    87,671.57x = 131,521.46 × 30,761.28
  4. Step 4: Simplify right side
    87,671.57x = 4,045,768,303.26
  5. Step 5: Solve for x
    x = 4,045,768,303.26/87,671.57
  6. Step 6: Final answer
    x = 46,146.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.