Home / 87,892.09-121,287.58-51,588.60

Finding the Fourth Proportional to 87,892.09, 121,287.58 and 51,588.60

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Solution

The fourth proportional to 87,892.09, 121,287.58 and 51,588.60 is: 71,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,892.09 : 121,287.58 = 51,588.60 : x
  2. Step 2: Convert to fraction form
    87,892.09/121,287.58 = 51,588.60/x
  3. Step 3: Cross multiply
    87,892.09x = 121,287.58 × 51,588.60
  4. Step 4: Simplify right side
    87,892.09x = 6,257,055,865.79
  5. Step 5: Solve for x
    x = 6,257,055,865.79/87,892.09
  6. Step 6: Final answer
    x = 71,190.21

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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.