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Finding the Fourth Proportional to 61,951.68, 92,868 and 39,702.72

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Solution

The fourth proportional to 61,951.68, 92,868 and 39,702.72 is: 59,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,951.68 : 92,868 = 39,702.72 : x
  2. Step 2: Convert to fraction form
    61,951.68/92,868 = 39,702.72/x
  3. Step 3: Cross multiply
    61,951.68x = 92,868 × 39,702.72
  4. Step 4: Simplify right side
    61,951.68x = 3,687,112,200.96
  5. Step 5: Solve for x
    x = 3,687,112,200.96/61,951.68
  6. Step 6: Final answer
    x = 59,515.94

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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.