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Finding the Fourth Proportional to 54,503.51, 81,752.96 and 18,972.92

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Solution

The fourth proportional to 54,503.51, 81,752.96 and 18,972.92 is: 28,458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,503.51 : 81,752.96 = 18,972.92 : x
  2. Step 2: Convert to fraction form
    54,503.51/81,752.96 = 18,972.92/x
  3. Step 3: Cross multiply
    54,503.51x = 81,752.96 × 18,972.92
  4. Step 4: Simplify right side
    54,503.51x = 1,551,091,866.21
  5. Step 5: Solve for x
    x = 1,551,091,866.21/54,503.51
  6. Step 6: Final answer
    x = 28,458.57

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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.