Home / 57,220.45-78,965.18-31,727.89

Finding the Fourth Proportional to 57,220.45, 78,965.18 and 31,727.89

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Solution

The fourth proportional to 57,220.45, 78,965.18 and 31,727.89 is: 43,785.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,220.45 : 78,965.18 = 31,727.89 : x
  2. Step 2: Convert to fraction form
    57,220.45/78,965.18 = 31,727.89/x
  3. Step 3: Cross multiply
    57,220.45x = 78,965.18 × 31,727.89
  4. Step 4: Simplify right side
    57,220.45x = 2,505,398,736.77
  5. Step 5: Solve for x
    x = 2,505,398,736.77/57,220.45
  6. Step 6: Final answer
    x = 43,785.02

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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.