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Finding the Fourth Proportional to 35,136, 48,487.68 and 20,231.68

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Solution

The fourth proportional to 35,136, 48,487.68 and 20,231.68 is: 27,919.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,136 : 48,487.68 = 20,231.68 : x
  2. Step 2: Convert to fraction form
    35,136/48,487.68 = 20,231.68/x
  3. Step 3: Cross multiply
    35,136x = 48,487.68 × 20,231.68
  4. Step 4: Simplify right side
    35,136x = 980,987,225.70
  5. Step 5: Solve for x
    x = 980,987,225.70/35,136
  6. Step 6: Final answer
    x = 27,919.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.