Home / 57,515.72-79,372.32-31,677.20

Finding the Fourth Proportional to 57,515.72, 79,372.32 and 31,677.20

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Solution

The fourth proportional to 57,515.72, 79,372.32 and 31,677.20 is: 43,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,515.72 : 79,372.32 = 31,677.20 : x
  2. Step 2: Convert to fraction form
    57,515.72/79,372.32 = 31,677.20/x
  3. Step 3: Cross multiply
    57,515.72x = 79,372.32 × 31,677.20
  4. Step 4: Simplify right side
    57,515.72x = 2,514,292,855.10
  5. Step 5: Solve for x
    x = 2,514,292,855.10/57,515.72
  6. Step 6: Final answer
    x = 43,714.88

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1.5x scale

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.