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Finding the Fourth Proportional to 57,074.52, 78,744.98 and 34,420.44

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Solution

The fourth proportional to 57,074.52, 78,744.98 and 34,420.44 is: 47,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,074.52 : 78,744.98 = 34,420.44 : x
  2. Step 2: Convert to fraction form
    57,074.52/78,744.98 = 34,420.44/x
  3. Step 3: Cross multiply
    57,074.52x = 78,744.98 × 34,420.44
  4. Step 4: Simplify right side
    57,074.52x = 2,710,436,293.56
  5. Step 5: Solve for x
    x = 2,710,436,293.56/57,074.52
  6. Step 6: Final answer
    x = 47,489.43

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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.