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Finding the Fourth Proportional to 79,221.30, 118,851.30 and 25,916.37

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Solution

The fourth proportional to 79,221.30, 118,851.30 and 25,916.37 is: 38,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,221.30 : 118,851.30 = 25,916.37 : x
  2. Step 2: Convert to fraction form
    79,221.30/118,851.30 = 25,916.37/x
  3. Step 3: Cross multiply
    79,221.30x = 118,851.30 × 25,916.37
  4. Step 4: Simplify right side
    79,221.30x = 3,080,194,265.78
  5. Step 5: Solve for x
    x = 3,080,194,265.78/79,221.30
  6. Step 6: Final answer
    x = 38,880.89

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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.