Home / 87,700.56-121,019.40-53,694.42

Finding the Fourth Proportional to 87,700.56, 121,019.40 and 53,694.42

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Solution

The fourth proportional to 87,700.56, 121,019.40 and 53,694.42 is: 74,093.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,700.56 : 121,019.40 = 53,694.42 : x
  2. Step 2: Convert to fraction form
    87,700.56/121,019.40 = 53,694.42/x
  3. Step 3: Cross multiply
    87,700.56x = 121,019.40 × 53,694.42
  4. Step 4: Simplify right side
    87,700.56x = 6,498,066,491.75
  5. Step 5: Solve for x
    x = 6,498,066,491.75/87,700.56
  6. Step 6: Final answer
    x = 74,093.79

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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.