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Finding the Fourth Proportional to 61,872.62, 92,749.70 and 19,729.47

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Solution

The fourth proportional to 61,872.62, 92,749.70 and 19,729.47 is: 29,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.62 : 92,749.70 = 19,729.47 : x
  2. Step 2: Convert to fraction form
    61,872.62/92,749.70 = 19,729.47/x
  3. Step 3: Cross multiply
    61,872.62x = 92,749.70 × 19,729.47
  4. Step 4: Simplify right side
    61,872.62x = 1,829,902,806.92
  5. Step 5: Solve for x
    x = 1,829,902,806.92/61,872.62
  6. Step 6: Final answer
    x = 29,575.32

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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.