Home / 87,758.81-121,107.75-53,767.36

Finding the Fourth Proportional to 87,758.81, 121,107.75 and 53,767.36

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Solution

The fourth proportional to 87,758.81, 121,107.75 and 53,767.36 is: 74,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,758.81 : 121,107.75 = 53,767.36 : x
  2. Step 2: Convert to fraction form
    87,758.81/121,107.75 = 53,767.36/x
  3. Step 3: Cross multiply
    87,758.81x = 121,107.75 × 53,767.36
  4. Step 4: Simplify right side
    87,758.81x = 6,511,643,942.80
  5. Step 5: Solve for x
    x = 6,511,643,942.80/87,758.81
  6. Step 6: Final answer
    x = 74,199.32

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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.