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Finding the Fourth Proportional to 57,670.56, 79,539.30 and 39,761.46

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Solution

The fourth proportional to 57,670.56, 79,539.30 and 39,761.46 is: 54,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,670.56 : 79,539.30 = 39,761.46 : x
  2. Step 2: Convert to fraction form
    57,670.56/79,539.30 = 39,761.46/x
  3. Step 3: Cross multiply
    57,670.56x = 79,539.30 × 39,761.46
  4. Step 4: Simplify right side
    57,670.56x = 3,162,598,695.38
  5. Step 5: Solve for x
    x = 3,162,598,695.38/57,670.56
  6. Step 6: Final answer
    x = 54,839.05

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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.