Home / 57,191.92-78,922.74-31,699.36

Finding the Fourth Proportional to 57,191.92, 78,922.74 and 31,699.36

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Solution

The fourth proportional to 57,191.92, 78,922.74 and 31,699.36 is: 43,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,191.92 : 78,922.74 = 31,699.36 : x
  2. Step 2: Convert to fraction form
    57,191.92/78,922.74 = 31,699.36/x
  3. Step 3: Cross multiply
    57,191.92x = 78,922.74 × 31,699.36
  4. Step 4: Simplify right side
    57,191.92x = 2,501,800,347.45
  5. Step 5: Solve for x
    x = 2,501,800,347.45/57,191.92
  6. Step 6: Final answer
    x = 43,743.95

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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.