Home / 87,758.38-121,057.35-53,783.33

Finding the Fourth Proportional to 87,758.38, 121,057.35 and 53,783.33

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Solution

The fourth proportional to 87,758.38, 121,057.35 and 53,783.33 is: 74,190.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,758.38 : 121,057.35 = 53,783.33 : x
  2. Step 2: Convert to fraction form
    87,758.38/121,057.35 = 53,783.33/x
  3. Step 3: Cross multiply
    87,758.38x = 121,057.35 × 53,783.33
  4. Step 4: Simplify right side
    87,758.38x = 6,510,867,403.98
  5. Step 5: Solve for x
    x = 6,510,867,403.98/87,758.38
  6. Step 6: Final answer
    x = 74,190.84

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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.