Home / 89,361.67-123,288.26-57,115.16

Finding the Fourth Proportional to 89,361.67, 123,288.26 and 57,115.16

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Solution

The fourth proportional to 89,361.67, 123,288.26 and 57,115.16 is: 78,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,361.67 : 123,288.26 = 57,115.16 : x
  2. Step 2: Convert to fraction form
    89,361.67/123,288.26 = 57,115.16/x
  3. Step 3: Cross multiply
    89,361.67x = 123,288.26 × 57,115.16
  4. Step 4: Simplify right side
    89,361.67x = 7,041,628,696.02
  5. Step 5: Solve for x
    x = 7,041,628,696.02/89,361.67
  6. Step 6: Final answer
    x = 78,799.21

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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.