Home / 89,661.60-123,600.24-57,391.47

Finding the Fourth Proportional to 89,661.60, 123,600.24 and 57,391.47

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Solution

The fourth proportional to 89,661.60, 123,600.24 and 57,391.47 is: 79,115.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,661.60 : 123,600.24 = 57,391.47 : x
  2. Step 2: Convert to fraction form
    89,661.60/123,600.24 = 57,391.47/x
  3. Step 3: Cross multiply
    89,661.60x = 123,600.24 × 57,391.47
  4. Step 4: Simplify right side
    89,661.60x = 7,093,599,465.95
  5. Step 5: Solve for x
    x = 7,093,599,465.95/89,661.60
  6. Step 6: Final answer
    x = 79,115.25

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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.