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Finding the Fourth Proportional to 61,551.45, 85,084.47 and 54,902.97

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Solution

The fourth proportional to 61,551.45, 85,084.47 and 54,902.97 is: 75,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,551.45 : 85,084.47 = 54,902.97 : x
  2. Step 2: Convert to fraction form
    61,551.45/85,084.47 = 54,902.97/x
  3. Step 3: Cross multiply
    61,551.45x = 85,084.47 × 54,902.97
  4. Step 4: Simplify right side
    61,551.45x = 4,671,390,103.88
  5. Step 5: Solve for x
    x = 4,671,390,103.88/61,551.45
  6. Step 6: Final answer
    x = 75,894.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.