Home / 72,471.28-99,968-45,571.20

Finding the Fourth Proportional to 72,471.28, 99,968 and 45,571.20

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Solution

The fourth proportional to 72,471.28, 99,968 and 45,571.20 is: 62,861.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,471.28 : 99,968 = 45,571.20 : x
  2. Step 2: Convert to fraction form
    72,471.28/99,968 = 45,571.20/x
  3. Step 3: Cross multiply
    72,471.28x = 99,968 × 45,571.20
  4. Step 4: Simplify right side
    72,471.28x = 4,555,661,721.60
  5. Step 5: Solve for x
    x = 4,555,661,721.60/72,471.28
  6. Step 6: Final answer
    x = 62,861.62

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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.