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Finding the Fourth Proportional to 39,022.44, 53,851.10 and 21,117.44

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Solution

The fourth proportional to 39,022.44, 53,851.10 and 21,117.44 is: 29,142.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,022.44 : 53,851.10 = 21,117.44 : x
  2. Step 2: Convert to fraction form
    39,022.44/53,851.10 = 21,117.44/x
  3. Step 3: Cross multiply
    39,022.44x = 53,851.10 × 21,117.44
  4. Step 4: Simplify right side
    39,022.44x = 1,137,197,051.13
  5. Step 5: Solve for x
    x = 1,137,197,051.13/39,022.44
  6. Step 6: Final answer
    x = 29,142.13

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