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Finding the Fourth Proportional to 37,702.89, 51,996.60 and 28,728.90

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Solution

The fourth proportional to 37,702.89, 51,996.60 and 28,728.90 is: 39,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,702.89 : 51,996.60 = 28,728.90 : x
  2. Step 2: Convert to fraction form
    37,702.89/51,996.60 = 28,728.90/x
  3. Step 3: Cross multiply
    37,702.89x = 51,996.60 × 28,728.90
  4. Step 4: Simplify right side
    37,702.89x = 1,493,805,121.74
  5. Step 5: Solve for x
    x = 1,493,805,121.74/37,702.89
  6. Step 6: Final answer
    x = 39,620.44

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1.5x scale

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.