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Finding the Fourth Proportional to 54,881.52, 81,830.44 and 53,885.08

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Solution

The fourth proportional to 54,881.52, 81,830.44 and 53,885.08 is: 80,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,881.52 : 81,830.44 = 53,885.08 : x
  2. Step 2: Convert to fraction form
    54,881.52/81,830.44 = 53,885.08/x
  3. Step 3: Cross multiply
    54,881.52x = 81,830.44 × 53,885.08
  4. Step 4: Simplify right side
    54,881.52x = 4,409,439,805.84
  5. Step 5: Solve for x
    x = 4,409,439,805.84/54,881.52
  6. Step 6: Final answer
    x = 80,344.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.