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Finding the Fourth Proportional to 37,909, 56,876.46 and 21,248.92

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Solution

The fourth proportional to 37,909, 56,876.46 and 21,248.92 is: 31,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,909 : 56,876.46 = 21,248.92 : x
  2. Step 2: Convert to fraction form
    37,909/56,876.46 = 21,248.92/x
  3. Step 3: Cross multiply
    37,909x = 56,876.46 × 21,248.92
  4. Step 4: Simplify right side
    37,909x = 1,208,563,348.42
  5. Step 5: Solve for x
    x = 1,208,563,348.42/37,909
  6. Step 6: Final answer
    x = 31,880.64

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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.