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Finding the Fourth Proportional to 86,047.40, 118,724.64 and 50,216.96

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Solution

The fourth proportional to 86,047.40, 118,724.64 and 50,216.96 is: 69,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,047.40 : 118,724.64 = 50,216.96 : x
  2. Step 2: Convert to fraction form
    86,047.40/118,724.64 = 50,216.96/x
  3. Step 3: Cross multiply
    86,047.40x = 118,724.64 × 50,216.96
  4. Step 4: Simplify right side
    86,047.40x = 5,961,990,497.89
  5. Step 5: Solve for x
    x = 5,961,990,497.89/86,047.40
  6. Step 6: Final answer
    x = 69,287.28

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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.