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Finding the Fourth Proportional to 38,486.40, 57,614.40 and 34,339.20

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Solution

The fourth proportional to 38,486.40, 57,614.40 and 34,339.20 is: 51,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,486.40 : 57,614.40 = 34,339.20 : x
  2. Step 2: Convert to fraction form
    38,486.40/57,614.40 = 34,339.20/x
  3. Step 3: Cross multiply
    38,486.40x = 57,614.40 × 34,339.20
  4. Step 4: Simplify right side
    38,486.40x = 1,978,432,404.48
  5. Step 5: Solve for x
    x = 1,978,432,404.48/38,486.40
  6. Step 6: Final answer
    x = 51,406.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.