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Finding the Fourth Proportional to 85,993.11, 118,666.49 and 47,755.08

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Solution

The fourth proportional to 85,993.11, 118,666.49 and 47,755.08 is: 65,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,993.11 : 118,666.49 = 47,755.08 : x
  2. Step 2: Convert to fraction form
    85,993.11/118,666.49 = 47,755.08/x
  3. Step 3: Cross multiply
    85,993.11x = 118,666.49 × 47,755.08
  4. Step 4: Simplify right side
    85,993.11x = 5,666,927,723.27
  5. Step 5: Solve for x
    x = 5,666,927,723.27/85,993.11
  6. Step 6: Final answer
    x = 65,899.79

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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.