Home / 57,149.09-78,864.91-31,655.37

Finding the Fourth Proportional to 57,149.09, 78,864.91 and 31,655.37

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Solution

The fourth proportional to 57,149.09, 78,864.91 and 31,655.37 is: 43,683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,149.09 : 78,864.91 = 31,655.37 : x
  2. Step 2: Convert to fraction form
    57,149.09/78,864.91 = 31,655.37/x
  3. Step 3: Cross multiply
    57,149.09x = 78,864.91 × 31,655.37
  4. Step 4: Simplify right side
    57,149.09x = 2,496,497,789.96
  5. Step 5: Solve for x
    x = 2,496,497,789.96/57,149.09
  6. Step 6: Final answer
    x = 43,683.95

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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.