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Finding the Fourth Proportional to 43,669.02, 65,448.72 and 18,679.70

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Solution

The fourth proportional to 43,669.02, 65,448.72 and 18,679.70 is: 27,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,669.02 : 65,448.72 = 18,679.70 : x
  2. Step 2: Convert to fraction form
    43,669.02/65,448.72 = 18,679.70/x
  3. Step 3: Cross multiply
    43,669.02x = 65,448.72 × 18,679.70
  4. Step 4: Simplify right side
    43,669.02x = 1,222,562,127.74
  5. Step 5: Solve for x
    x = 1,222,562,127.74/43,669.02
  6. Step 6: Final answer
    x = 27,996.10

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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.