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Finding the Fourth Proportional to 57,282.36, 79,046.88 and 31,788.42

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Solution

The fourth proportional to 57,282.36, 79,046.88 and 31,788.42 is: 43,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,282.36 : 79,046.88 = 31,788.42 : x
  2. Step 2: Convert to fraction form
    57,282.36/79,046.88 = 31,788.42/x
  3. Step 3: Cross multiply
    57,282.36x = 79,046.88 × 31,788.42
  4. Step 4: Simplify right side
    57,282.36x = 2,512,775,421.13
  5. Step 5: Solve for x
    x = 2,512,775,421.13/57,282.36
  6. Step 6: Final answer
    x = 43,866.48

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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.