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Finding the Fourth Proportional to 57,714.64, 79,600.04 and 39,805.52

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Solution

The fourth proportional to 57,714.64, 79,600.04 and 39,805.52 is: 54,899.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,714.64 : 79,600.04 = 39,805.52 : x
  2. Step 2: Convert to fraction form
    57,714.64/79,600.04 = 39,805.52/x
  3. Step 3: Cross multiply
    57,714.64x = 79,600.04 × 39,805.52
  4. Step 4: Simplify right side
    57,714.64x = 3,168,520,984.22
  5. Step 5: Solve for x
    x = 3,168,520,984.22/57,714.64
  6. Step 6: Final answer
    x = 54,899.78

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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.