Home / 87,921.96-121,331.34-47,633.32

Finding the Fourth Proportional to 87,921.96, 121,331.34 and 47,633.32

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Solution

The fourth proportional to 87,921.96, 121,331.34 and 47,633.32 is: 65,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.96 : 121,331.34 = 47,633.32 : x
  2. Step 2: Convert to fraction form
    87,921.96/121,331.34 = 47,633.32/x
  3. Step 3: Cross multiply
    87,921.96x = 121,331.34 × 47,633.32
  4. Step 4: Simplify right side
    87,921.96x = 5,779,414,147.39
  5. Step 5: Solve for x
    x = 5,779,414,147.39/87,921.96
  6. Step 6: Final answer
    x = 65,733.46

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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.