Home / 57,146.06-78,861.80-31,651.86

Finding the Fourth Proportional to 57,146.06, 78,861.80 and 31,651.86

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Solution

The fourth proportional to 57,146.06, 78,861.80 and 31,651.86 is: 43,679.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,146.06 : 78,861.80 = 31,651.86 : x
  2. Step 2: Convert to fraction form
    57,146.06/78,861.80 = 31,651.86/x
  3. Step 3: Cross multiply
    57,146.06x = 78,861.80 × 31,651.86
  4. Step 4: Simplify right side
    57,146.06x = 2,496,123,027.81
  5. Step 5: Solve for x
    x = 2,496,123,027.81/57,146.06
  6. Step 6: Final answer
    x = 43,679.71

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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.