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Finding the Fourth Proportional to 85,618.83, 118,177.73 and 49,815.76

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Solution

The fourth proportional to 85,618.83, 118,177.73 and 49,815.76 is: 68,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.83 : 118,177.73 = 49,815.76 : x
  2. Step 2: Convert to fraction form
    85,618.83/118,177.73 = 49,815.76/x
  3. Step 3: Cross multiply
    85,618.83x = 118,177.73 × 49,815.76
  4. Step 4: Simplify right side
    85,618.83x = 5,887,113,579.11
  5. Step 5: Solve for x
    x = 5,887,113,579.11/85,618.83
  6. Step 6: Final answer
    x = 68,759.57

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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.