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Finding the Fourth Proportional to 61,751, 92,478.49 and 31,686.12

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Solution

The fourth proportional to 61,751, 92,478.49 and 31,686.12 is: 47,453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,751 : 92,478.49 = 31,686.12 : x
  2. Step 2: Convert to fraction form
    61,751/92,478.49 = 31,686.12/x
  3. Step 3: Cross multiply
    61,751x = 92,478.49 × 31,686.12
  4. Step 4: Simplify right side
    61,751x = 2,930,284,531.56
  5. Step 5: Solve for x
    x = 2,930,284,531.56/61,751
  6. Step 6: Final answer
    x = 47,453.23

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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.