Home / 87,916.54-121,322.29-51,617.38

Finding the Fourth Proportional to 87,916.54, 121,322.29 and 51,617.38

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Solution

The fourth proportional to 87,916.54, 121,322.29 and 51,617.38 is: 71,230.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,916.54 : 121,322.29 = 51,617.38 : x
  2. Step 2: Convert to fraction form
    87,916.54/121,322.29 = 51,617.38/x
  3. Step 3: Cross multiply
    87,916.54x = 121,322.29 × 51,617.38
  4. Step 4: Simplify right side
    87,916.54x = 6,262,338,745.40
  5. Step 5: Solve for x
    x = 6,262,338,745.40/87,916.54
  6. Step 6: Final answer
    x = 71,230.50

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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.