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Finding the Fourth Proportional to 61,819.64, 85,902.73 and 61,177.40

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Solution

The fourth proportional to 61,819.64, 85,902.73 and 61,177.40 is: 85,010.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,819.64 : 85,902.73 = 61,177.40 : x
  2. Step 2: Convert to fraction form
    61,819.64/85,902.73 = 61,177.40/x
  3. Step 3: Cross multiply
    61,819.64x = 85,902.73 × 61,177.40
  4. Step 4: Simplify right side
    61,819.64x = 5,255,305,674.30
  5. Step 5: Solve for x
    x = 5,255,305,674.30/61,819.64
  6. Step 6: Final answer
    x = 85,010.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.