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Finding the Fourth Proportional to 57,936.50, 79,952.37 and 31,440.50

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Solution

The fourth proportional to 57,936.50, 79,952.37 and 31,440.50 is: 43,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,936.50 : 79,952.37 = 31,440.50 : x
  2. Step 2: Convert to fraction form
    57,936.50/79,952.37 = 31,440.50/x
  3. Step 3: Cross multiply
    57,936.50x = 79,952.37 × 31,440.50
  4. Step 4: Simplify right side
    57,936.50x = 2,513,742,488.99
  5. Step 5: Solve for x
    x = 2,513,742,488.99/57,936.50
  6. Step 6: Final answer
    x = 43,387.89

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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.