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Finding the Fourth Proportional to 43,651.55, 65,420.53 and 19,618.04

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Solution

The fourth proportional to 43,651.55, 65,420.53 and 19,618.04 is: 29,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,651.55 : 65,420.53 = 19,618.04 : x
  2. Step 2: Convert to fraction form
    43,651.55/65,420.53 = 19,618.04/x
  3. Step 3: Cross multiply
    43,651.55x = 65,420.53 × 19,618.04
  4. Step 4: Simplify right side
    43,651.55x = 1,283,422,688.87
  5. Step 5: Solve for x
    x = 1,283,422,688.87/43,651.55
  6. Step 6: Final answer
    x = 29,401.54

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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.