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Finding the Fourth Proportional to 52,957.48, 79,446 and 17,420.80

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Solution

The fourth proportional to 52,957.48, 79,446 and 17,420.80 is: 26,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,957.48 : 79,446 = 17,420.80 : x
  2. Step 2: Convert to fraction form
    52,957.48/79,446 = 17,420.80/x
  3. Step 3: Cross multiply
    52,957.48x = 79,446 × 17,420.80
  4. Step 4: Simplify right side
    52,957.48x = 1,384,012,876.80
  5. Step 5: Solve for x
    x = 1,384,012,876.80/52,957.48
  6. Step 6: Final answer
    x = 26,134.42

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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.