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Finding the Fourth Proportional to 73,421.78, 110,136.85 and 20,827.13

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Solution

The fourth proportional to 73,421.78, 110,136.85 and 20,827.13 is: 31,241.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,421.78 : 110,136.85 = 20,827.13 : x
  2. Step 2: Convert to fraction form
    73,421.78/110,136.85 = 20,827.13/x
  3. Step 3: Cross multiply
    73,421.78x = 110,136.85 × 20,827.13
  4. Step 4: Simplify right side
    73,421.78x = 2,293,833,889.99
  5. Step 5: Solve for x
    x = 2,293,833,889.99/73,421.78
  6. Step 6: Final answer
    x = 31,241.87

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1.5x scale

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.