Home / 85,921.25-118,571.06-47,686.56

Finding the Fourth Proportional to 85,921.25, 118,571.06 and 47,686.56

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Solution

The fourth proportional to 85,921.25, 118,571.06 and 47,686.56 is: 65,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,921.25 : 118,571.06 = 47,686.56 : x
  2. Step 2: Convert to fraction form
    85,921.25/118,571.06 = 47,686.56/x
  3. Step 3: Cross multiply
    85,921.25x = 118,571.06 × 47,686.56
  4. Step 4: Simplify right side
    85,921.25x = 5,654,245,728.52
  5. Step 5: Solve for x
    x = 5,654,245,728.52/85,921.25
  6. Step 6: Final answer
    x = 65,807.31

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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.