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Finding the Fourth Proportional to 57,879.18, 79,828.20 and 38,752.88

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Solution

The fourth proportional to 57,879.18, 79,828.20 and 38,752.88 is: 53,448.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.18 : 79,828.20 = 38,752.88 : x
  2. Step 2: Convert to fraction form
    57,879.18/79,828.20 = 38,752.88/x
  3. Step 3: Cross multiply
    57,879.18x = 79,828.20 × 38,752.88
  4. Step 4: Simplify right side
    57,879.18x = 3,093,572,256.08
  5. Step 5: Solve for x
    x = 3,093,572,256.08/57,879.18
  6. Step 6: Final answer
    x = 53,448.79

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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.