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Finding the Fourth Proportional to 85,559.10, 118,067.67 and 47,319

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Solution

The fourth proportional to 85,559.10, 118,067.67 and 47,319 is: 65,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,559.10 : 118,067.67 = 47,319 : x
  2. Step 2: Convert to fraction form
    85,559.10/118,067.67 = 47,319/x
  3. Step 3: Cross multiply
    85,559.10x = 118,067.67 × 47,319
  4. Step 4: Simplify right side
    85,559.10x = 5,586,844,076.73
  5. Step 5: Solve for x
    x = 5,586,844,076.73/85,559.10
  6. Step 6: Final answer
    x = 65,298.07

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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.