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Finding the Fourth Proportional to 40,523.20, 60,770.40 and 18,347.20

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Solution

The fourth proportional to 40,523.20, 60,770.40 and 18,347.20 is: 27,514.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,523.20 : 60,770.40 = 18,347.20 : x
  2. Step 2: Convert to fraction form
    40,523.20/60,770.40 = 18,347.20/x
  3. Step 3: Cross multiply
    40,523.20x = 60,770.40 × 18,347.20
  4. Step 4: Simplify right side
    40,523.20x = 1,114,966,682.88
  5. Step 5: Solve for x
    x = 1,114,966,682.88/40,523.20
  6. Step 6: Final answer
    x = 27,514.28

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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.