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Finding the Fourth Proportional to 57,626, 79,486.40 and 40,654.88

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Solution

The fourth proportional to 57,626, 79,486.40 and 40,654.88 is: 56,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,626 : 79,486.40 = 40,654.88 : x
  2. Step 2: Convert to fraction form
    57,626/79,486.40 = 40,654.88/x
  3. Step 3: Cross multiply
    57,626x = 79,486.40 × 40,654.88
  4. Step 4: Simplify right side
    57,626x = 3,231,510,053.63
  5. Step 5: Solve for x
    x = 3,231,510,053.63/57,626
  6. Step 6: Final answer
    x = 56,077.29

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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.