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Finding the Fourth Proportional to 61,000.25, 91,491.39 and 35,711.43

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Solution

The fourth proportional to 61,000.25, 91,491.39 and 35,711.43 is: 53,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,000.25 : 91,491.39 = 35,711.43 : x
  2. Step 2: Convert to fraction form
    61,000.25/91,491.39 = 35,711.43/x
  3. Step 3: Cross multiply
    61,000.25x = 91,491.39 × 35,711.43
  4. Step 4: Simplify right side
    61,000.25x = 3,267,288,369.59
  5. Step 5: Solve for x
    x = 3,267,288,369.59/61,000.25
  6. Step 6: Final answer
    x = 53,561.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.