Home / 87,999.05-121,439.23-47,712.46

Finding the Fourth Proportional to 87,999.05, 121,439.23 and 47,712.46

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Solution

The fourth proportional to 87,999.05, 121,439.23 and 47,712.46 is: 65,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.05 : 121,439.23 = 47,712.46 : x
  2. Step 2: Convert to fraction form
    87,999.05/121,439.23 = 47,712.46/x
  3. Step 3: Cross multiply
    87,999.05x = 121,439.23 × 47,712.46
  4. Step 4: Simplify right side
    87,999.05x = 5,794,164,403.81
  5. Step 5: Solve for x
    x = 5,794,164,403.81/87,999.05
  6. Step 6: Final answer
    x = 65,843.49

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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.