Home / 75,728.57-104,505.83-43,460.61

Finding the Fourth Proportional to 75,728.57, 104,505.83 and 43,460.61

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Solution

The fourth proportional to 75,728.57, 104,505.83 and 43,460.61 is: 59,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,728.57 : 104,505.83 = 43,460.61 : x
  2. Step 2: Convert to fraction form
    75,728.57/104,505.83 = 43,460.61/x
  3. Step 3: Cross multiply
    75,728.57x = 104,505.83 × 43,460.61
  4. Step 4: Simplify right side
    75,728.57x = 4,541,886,903.05
  5. Step 5: Solve for x
    x = 4,541,886,903.05/75,728.57
  6. Step 6: Final answer
    x = 59,975.87

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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.