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Finding the Fourth Proportional to 43,918.88, 65,881.02 and 17,620.22

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Solution

The fourth proportional to 43,918.88, 65,881.02 and 17,620.22 is: 26,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,918.88 : 65,881.02 = 17,620.22 : x
  2. Step 2: Convert to fraction form
    43,918.88/65,881.02 = 17,620.22/x
  3. Step 3: Cross multiply
    43,918.88x = 65,881.02 × 17,620.22
  4. Step 4: Simplify right side
    43,918.88x = 1,160,838,066.22
  5. Step 5: Solve for x
    x = 1,160,838,066.22/43,918.88
  6. Step 6: Final answer
    x = 26,431.41

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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.