Home / 57,149.84-78,865.94-31,656.12

Finding the Fourth Proportional to 57,149.84, 78,865.94 and 31,656.12

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Solution

The fourth proportional to 57,149.84, 78,865.94 and 31,656.12 is: 43,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,149.84 : 78,865.94 = 31,656.12 : x
  2. Step 2: Convert to fraction form
    57,149.84/78,865.94 = 31,656.12/x
  3. Step 3: Cross multiply
    57,149.84x = 78,865.94 × 31,656.12
  4. Step 4: Simplify right side
    57,149.84x = 2,496,589,739.69
  5. Step 5: Solve for x
    x = 2,496,589,739.69/57,149.84
  6. Step 6: Final answer
    x = 43,684.99

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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.