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Finding the Fourth Proportional to 85,604.77, 118,134.98 and 47,879.02

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Solution

The fourth proportional to 85,604.77, 118,134.98 and 47,879.02 is: 66,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,604.77 : 118,134.98 = 47,879.02 : x
  2. Step 2: Convert to fraction form
    85,604.77/118,134.98 = 47,879.02/x
  3. Step 3: Cross multiply
    85,604.77x = 118,134.98 × 47,879.02
  4. Step 4: Simplify right side
    85,604.77x = 5,656,186,628.09
  5. Step 5: Solve for x
    x = 5,656,186,628.09/85,604.77
  6. Step 6: Final answer
    x = 66,073.27

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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.