Home / 85,921.11-118,571.82-47,680.83

Finding the Fourth Proportional to 85,921.11, 118,571.82 and 47,680.83

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Solution

The fourth proportional to 85,921.11, 118,571.82 and 47,680.83 is: 65,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,921.11 : 118,571.82 = 47,680.83 : x
  2. Step 2: Convert to fraction form
    85,921.11/118,571.82 = 47,680.83/x
  3. Step 3: Cross multiply
    85,921.11x = 118,571.82 × 47,680.83
  4. Step 4: Simplify right side
    85,921.11x = 5,653,602,792.21
  5. Step 5: Solve for x
    x = 5,653,602,792.21/85,921.11
  6. Step 6: Final answer
    x = 65,799.93

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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.