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Finding the Fourth Proportional to 57,300.75, 79,079.76 and 31,808.70

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Solution

The fourth proportional to 57,300.75, 79,079.76 and 31,808.70 is: 43,898.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,300.75 : 79,079.76 = 31,808.70 : x
  2. Step 2: Convert to fraction form
    57,300.75/79,079.76 = 31,808.70/x
  3. Step 3: Cross multiply
    57,300.75x = 79,079.76 × 31,808.70
  4. Step 4: Simplify right side
    57,300.75x = 2,515,424,361.91
  5. Step 5: Solve for x
    x = 2,515,424,361.91/57,300.75
  6. Step 6: Final answer
    x = 43,898.63

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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.