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Finding the Fourth Proportional to 79,057.91, 118,582.61 and 19,893.48

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Solution

The fourth proportional to 79,057.91, 118,582.61 and 19,893.48 is: 29,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,057.91 : 118,582.61 = 19,893.48 : x
  2. Step 2: Convert to fraction form
    79,057.91/118,582.61 = 19,893.48/x
  3. Step 3: Cross multiply
    79,057.91x = 118,582.61 × 19,893.48
  4. Step 4: Simplify right side
    79,057.91x = 2,359,020,680.92
  5. Step 5: Solve for x
    x = 2,359,020,680.92/79,057.91
  6. Step 6: Final answer
    x = 29,839.15

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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.