Home / 57,155.29-78,873.44-31,661.57

Finding the Fourth Proportional to 57,155.29, 78,873.44 and 31,661.57

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Solution

The fourth proportional to 57,155.29, 78,873.44 and 31,661.57 is: 43,692.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,155.29 : 78,873.44 = 31,661.57 : x
  2. Step 2: Convert to fraction form
    57,155.29/78,873.44 = 31,661.57/x
  3. Step 3: Cross multiply
    57,155.29x = 78,873.44 × 31,661.57
  4. Step 4: Simplify right side
    57,155.29x = 2,497,257,218.04
  5. Step 5: Solve for x
    x = 2,497,257,218.04/57,155.29
  6. Step 6: Final answer
    x = 43,692.50

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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.