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Finding the Fourth Proportional to 79,418.96, 119,128.92 and 26,828.72

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Solution

The fourth proportional to 79,418.96, 119,128.92 and 26,828.72 is: 40,243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,418.96 : 119,128.92 = 26,828.72 : x
  2. Step 2: Convert to fraction form
    79,418.96/119,128.92 = 26,828.72/x
  3. Step 3: Cross multiply
    79,418.96x = 119,128.92 × 26,828.72
  4. Step 4: Simplify right side
    79,418.96x = 3,196,076,438.58
  5. Step 5: Solve for x
    x = 3,196,076,438.58/79,418.96
  6. Step 6: Final answer
    x = 40,243.24

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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.