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Finding the Fourth Proportional to 57,164.70, 78,887.88 and 31,671.84

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Solution

The fourth proportional to 57,164.70, 78,887.88 and 31,671.84 is: 43,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,164.70 : 78,887.88 = 31,671.84 : x
  2. Step 2: Convert to fraction form
    57,164.70/78,887.88 = 31,671.84/x
  3. Step 3: Cross multiply
    57,164.70x = 78,887.88 × 31,671.84
  4. Step 4: Simplify right side
    57,164.70x = 2,498,524,313.30
  5. Step 5: Solve for x
    x = 2,498,524,313.30/57,164.70
  6. Step 6: Final answer
    x = 43,707.47

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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.