Home / 87,840.64-121,170.90-51,995.71

Finding the Fourth Proportional to 87,840.64, 121,170.90 and 51,995.71

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Solution

The fourth proportional to 87,840.64, 121,170.90 and 51,995.71 is: 71,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.64 : 121,170.90 = 51,995.71 : x
  2. Step 2: Convert to fraction form
    87,840.64/121,170.90 = 51,995.71/x
  3. Step 3: Cross multiply
    87,840.64x = 121,170.90 × 51,995.71
  4. Step 4: Simplify right side
    87,840.64x = 6,300,366,976.84
  5. Step 5: Solve for x
    x = 6,300,366,976.84/87,840.64
  6. Step 6: Final answer
    x = 71,724.97

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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.