Home / 87,951.23-121,371.32-47,664.64

Finding the Fourth Proportional to 87,951.23, 121,371.32 and 47,664.64

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Solution

The fourth proportional to 87,951.23, 121,371.32 and 47,664.64 is: 65,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,951.23 : 121,371.32 = 47,664.64 : x
  2. Step 2: Convert to fraction form
    87,951.23/121,371.32 = 47,664.64/x
  3. Step 3: Cross multiply
    87,951.23x = 121,371.32 × 47,664.64
  4. Step 4: Simplify right side
    87,951.23x = 5,785,120,441.35
  5. Step 5: Solve for x
    x = 5,785,120,441.35/87,951.23
  6. Step 6: Final answer
    x = 65,776.46

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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.