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Finding the Fourth Proportional to 57,436.56, 79,264.31 and 34,779.78

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Solution

The fourth proportional to 57,436.56, 79,264.31 and 34,779.78 is: 47,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,436.56 : 79,264.31 = 34,779.78 : x
  2. Step 2: Convert to fraction form
    57,436.56/79,264.31 = 34,779.78/x
  3. Step 3: Cross multiply
    57,436.56x = 79,264.31 × 34,779.78
  4. Step 4: Simplify right side
    57,436.56x = 2,756,795,089.75
  5. Step 5: Solve for x
    x = 2,756,795,089.75/57,436.56
  6. Step 6: Final answer
    x = 47,997.22

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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.