Home / 87,619.88-120,915.54-47,333.64

Finding the Fourth Proportional to 87,619.88, 120,915.54 and 47,333.64

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Solution

The fourth proportional to 87,619.88, 120,915.54 and 47,333.64 is: 65,320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.88 : 120,915.54 = 47,333.64 : x
  2. Step 2: Convert to fraction form
    87,619.88/120,915.54 = 47,333.64/x
  3. Step 3: Cross multiply
    87,619.88x = 120,915.54 × 47,333.64
  4. Step 4: Simplify right side
    87,619.88x = 5,723,372,640.77
  5. Step 5: Solve for x
    x = 5,723,372,640.77/87,619.88
  6. Step 6: Final answer
    x = 65,320.48

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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.