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Finding the Fourth Proportional to 29,991.55, 44,977.09 and 21,646.78

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Solution

The fourth proportional to 29,991.55, 44,977.09 and 21,646.78 is: 32,462.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,991.55 : 44,977.09 = 21,646.78 : x
  2. Step 2: Convert to fraction form
    29,991.55/44,977.09 = 21,646.78/x
  3. Step 3: Cross multiply
    29,991.55x = 44,977.09 × 21,646.78
  4. Step 4: Simplify right side
    29,991.55x = 973,609,172.27
  5. Step 5: Solve for x
    x = 973,609,172.27/29,991.55
  6. Step 6: Final answer
    x = 32,462.78

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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.