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Finding the Fourth Proportional to 54,248, 81,372.48 and 19,193.60

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Solution

The fourth proportional to 54,248, 81,372.48 and 19,193.60 is: 28,790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,248 : 81,372.48 = 19,193.60 : x
  2. Step 2: Convert to fraction form
    54,248/81,372.48 = 19,193.60/x
  3. Step 3: Cross multiply
    54,248x = 81,372.48 × 19,193.60
  4. Step 4: Simplify right side
    54,248x = 1,561,830,832.13
  5. Step 5: Solve for x
    x = 1,561,830,832.13/54,248
  6. Step 6: Final answer
    x = 28,790.57

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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.