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Finding the Fourth Proportional to 52,915.25, 79,372.88 and 15,979.25

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Solution

The fourth proportional to 52,915.25, 79,372.88 and 15,979.25 is: 23,968.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,915.25 : 79,372.88 = 15,979.25 : x
  2. Step 2: Convert to fraction form
    52,915.25/79,372.88 = 15,979.25/x
  3. Step 3: Cross multiply
    52,915.25x = 79,372.88 × 15,979.25
  4. Step 4: Simplify right side
    52,915.25x = 1,268,319,092.74
  5. Step 5: Solve for x
    x = 1,268,319,092.74/52,915.25
  6. Step 6: Final answer
    x = 23,968.88

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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.