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Finding the Fourth Proportional to 81,362.50, 122,230.44 and 57,728.32

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Solution

The fourth proportional to 81,362.50, 122,230.44 and 57,728.32 is: 86,724.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,362.50 : 122,230.44 = 57,728.32 : x
  2. Step 2: Convert to fraction form
    81,362.50/122,230.44 = 57,728.32/x
  3. Step 3: Cross multiply
    81,362.50x = 122,230.44 × 57,728.32
  4. Step 4: Simplify right side
    81,362.50x = 7,056,157,954.06
  5. Step 5: Solve for x
    x = 7,056,157,954.06/81,362.50
  6. Step 6: Final answer
    x = 86,724.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.