Home / 87,643.50-131,399.64-28,443.84

Finding the Fourth Proportional to 87,643.50, 131,399.64 and 28,443.84

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Solution

The fourth proportional to 87,643.50, 131,399.64 and 28,443.84 is: 42,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,643.50 : 131,399.64 = 28,443.84 : x
  2. Step 2: Convert to fraction form
    87,643.50/131,399.64 = 28,443.84/x
  3. Step 3: Cross multiply
    87,643.50x = 131,399.64 × 28,443.84
  4. Step 4: Simplify right side
    87,643.50x = 3,737,510,336.22
  5. Step 5: Solve for x
    x = 3,737,510,336.22/87,643.50
  6. Step 6: Final answer
    x = 42,644.47

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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.