Home / 72,728.14-100,364.21-40,896.36

Finding the Fourth Proportional to 72,728.14, 100,364.21 and 40,896.36

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Solution

The fourth proportional to 72,728.14, 100,364.21 and 40,896.36 is: 56,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728.14 : 100,364.21 = 40,896.36 : x
  2. Step 2: Convert to fraction form
    72,728.14/100,364.21 = 40,896.36/x
  3. Step 3: Cross multiply
    72,728.14x = 100,364.21 × 40,896.36
  4. Step 4: Simplify right side
    72,728.14x = 4,104,530,156.97
  5. Step 5: Solve for x
    x = 4,104,530,156.97/72,728.14
  6. Step 6: Final answer
    x = 56,436.62

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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.