Home / 87,888.82-121,160.25-62,694.58

Finding the Fourth Proportional to 87,888.82, 121,160.25 and 62,694.58

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Solution

The fourth proportional to 87,888.82, 121,160.25 and 62,694.58 is: 86,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,888.82 : 121,160.25 = 62,694.58 : x
  2. Step 2: Convert to fraction form
    87,888.82/121,160.25 = 62,694.58/x
  3. Step 3: Cross multiply
    87,888.82x = 121,160.25 × 62,694.58
  4. Step 4: Simplify right side
    87,888.82x = 7,596,090,986.45
  5. Step 5: Solve for x
    x = 7,596,090,986.45/87,888.82
  6. Step 6: Final answer
    x = 86,428.41

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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.