Home / 87,912.64-121,319.30-47,627.43

Finding the Fourth Proportional to 87,912.64, 121,319.30 and 47,627.43

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Solution

The fourth proportional to 87,912.64, 121,319.30 and 47,627.43 is: 65,725.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,912.64 : 121,319.30 = 47,627.43 : x
  2. Step 2: Convert to fraction form
    87,912.64/121,319.30 = 47,627.43/x
  3. Step 3: Cross multiply
    87,912.64x = 121,319.30 × 47,627.43
  4. Step 4: Simplify right side
    87,912.64x = 5,778,125,623.67
  5. Step 5: Solve for x
    x = 5,778,125,623.67/87,912.64
  6. Step 6: Final answer
    x = 65,725.77

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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.