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Finding the Fourth Proportional to 33,319.68, 45,981.12 and 18,212.44

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Solution

The fourth proportional to 33,319.68, 45,981.12 and 18,212.44 is: 25,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,319.68 : 45,981.12 = 18,212.44 : x
  2. Step 2: Convert to fraction form
    33,319.68/45,981.12 = 18,212.44/x
  3. Step 3: Cross multiply
    33,319.68x = 45,981.12 × 18,212.44
  4. Step 4: Simplify right side
    33,319.68x = 837,428,389.13
  5. Step 5: Solve for x
    x = 837,428,389.13/33,319.68
  6. Step 6: Final answer
    x = 25,133.15

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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.