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Finding the Fourth Proportional to 61,785.80, 85,269.78 and 51,696.44

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Solution

The fourth proportional to 61,785.80, 85,269.78 and 51,696.44 is: 71,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.80 : 85,269.78 = 51,696.44 : x
  2. Step 2: Convert to fraction form
    61,785.80/85,269.78 = 51,696.44/x
  3. Step 3: Cross multiply
    61,785.80x = 85,269.78 × 51,696.44
  4. Step 4: Simplify right side
    61,785.80x = 4,408,144,065.58
  5. Step 5: Solve for x
    x = 4,408,144,065.58/61,785.80
  6. Step 6: Final answer
    x = 71,345.59

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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.