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Finding the Fourth Proportional to 85,986.99, 118,660.37 and 47,744.57

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Solution

The fourth proportional to 85,986.99, 118,660.37 and 47,744.57 is: 65,886.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,986.99 : 118,660.37 = 47,744.57 : x
  2. Step 2: Convert to fraction form
    85,986.99/118,660.37 = 47,744.57/x
  3. Step 3: Cross multiply
    85,986.99x = 118,660.37 × 47,744.57
  4. Step 4: Simplify right side
    85,986.99x = 5,665,387,509.67
  5. Step 5: Solve for x
    x = 5,665,387,509.67/85,986.99
  6. Step 6: Final answer
    x = 65,886.57

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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.