Home / 87,669.90-121,028.45-57,501.45

Finding the Fourth Proportional to 87,669.90, 121,028.45 and 57,501.45

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Solution

The fourth proportional to 87,669.90, 121,028.45 and 57,501.45 is: 79,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,669.90 : 121,028.45 = 57,501.45 : x
  2. Step 2: Convert to fraction form
    87,669.90/121,028.45 = 57,501.45/x
  3. Step 3: Cross multiply
    87,669.90x = 121,028.45 × 57,501.45
  4. Step 4: Simplify right side
    87,669.90x = 6,959,310,761.11
  5. Step 5: Solve for x
    x = 6,959,310,761.11/87,669.90
  6. Step 6: Final answer
    x = 79,380.85

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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.