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Finding the Fourth Proportional to 57,342.55, 79,122.28 and 34,678.39

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Solution

The fourth proportional to 57,342.55, 79,122.28 and 34,678.39 is: 47,849.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,342.55 : 79,122.28 = 34,678.39 : x
  2. Step 2: Convert to fraction form
    57,342.55/79,122.28 = 34,678.39/x
  3. Step 3: Cross multiply
    57,342.55x = 79,122.28 × 34,678.39
  4. Step 4: Simplify right side
    57,342.55x = 2,743,833,283.53
  5. Step 5: Solve for x
    x = 2,743,833,283.53/57,342.55
  6. Step 6: Final answer
    x = 47,849.87

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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.