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Finding the Fourth Proportional to 38,396.56, 52,939.56 and 31,709.20

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Solution

The fourth proportional to 38,396.56, 52,939.56 and 31,709.20 is: 43,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,396.56 : 52,939.56 = 31,709.20 : x
  2. Step 2: Convert to fraction form
    38,396.56/52,939.56 = 31,709.20/x
  3. Step 3: Cross multiply
    38,396.56x = 52,939.56 × 31,709.20
  4. Step 4: Simplify right side
    38,396.56x = 1,678,671,095.95
  5. Step 5: Solve for x
    x = 1,678,671,095.95/38,396.56
  6. Step 6: Final answer
    x = 43,719.31

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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.