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Finding the Fourth Proportional to 57,356.64, 79,149.89 and 31,864.62

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Solution

The fourth proportional to 57,356.64, 79,149.89 and 31,864.62 is: 43,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,356.64 : 79,149.89 = 31,864.62 : x
  2. Step 2: Convert to fraction form
    57,356.64/79,149.89 = 31,864.62/x
  3. Step 3: Cross multiply
    57,356.64x = 79,149.89 × 31,864.62
  4. Step 4: Simplify right side
    57,356.64x = 2,522,081,544.37
  5. Step 5: Solve for x
    x = 2,522,081,544.37/57,356.64
  6. Step 6: Final answer
    x = 43,971.92

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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.