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Finding the Fourth Proportional to 86,059.61, 118,728.21 and 49,754.36

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Solution

The fourth proportional to 86,059.61, 118,728.21 and 49,754.36 is: 68,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,059.61 : 118,728.21 = 49,754.36 : x
  2. Step 2: Convert to fraction form
    86,059.61/118,728.21 = 49,754.36/x
  3. Step 3: Cross multiply
    86,059.61x = 118,728.21 × 49,754.36
  4. Step 4: Simplify right side
    86,059.61x = 5,907,245,508.85
  5. Step 5: Solve for x
    x = 5,907,245,508.85/86,059.61
  6. Step 6: Final answer
    x = 68,641.33

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1.5x scale

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.