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Finding the Fourth Proportional to 57,423.64, 86,135.46 and 33,979

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Solution

The fourth proportional to 57,423.64, 86,135.46 and 33,979 is: 50,968.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,423.64 : 86,135.46 = 33,979 : x
  2. Step 2: Convert to fraction form
    57,423.64/86,135.46 = 33,979/x
  3. Step 3: Cross multiply
    57,423.64x = 86,135.46 × 33,979
  4. Step 4: Simplify right side
    57,423.64x = 2,926,796,795.34
  5. Step 5: Solve for x
    x = 2,926,796,795.34/57,423.64
  6. Step 6: Final answer
    x = 50,968.50

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Double scale
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Similar ratio
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1.5x scale

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.