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Finding the Fourth Proportional to 54,012.56, 81,026.94 and 18,946.04

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Solution

The fourth proportional to 54,012.56, 81,026.94 and 18,946.04 is: 28,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,012.56 : 81,026.94 = 18,946.04 : x
  2. Step 2: Convert to fraction form
    54,012.56/81,026.94 = 18,946.04/x
  3. Step 3: Cross multiply
    54,012.56x = 81,026.94 × 18,946.04
  4. Step 4: Simplify right side
    54,012.56x = 1,535,139,646.32
  5. Step 5: Solve for x
    x = 1,535,139,646.32/54,012.56
  6. Step 6: Final answer
    x = 28,421.90

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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.