Home / 42,955.46-64,399.73-20,454.54

Finding the Fourth Proportional to 42,955.46, 64,399.73 and 20,454.54

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Solution

The fourth proportional to 42,955.46, 64,399.73 and 20,454.54 is: 30,665.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,955.46 : 64,399.73 = 20,454.54 : x
  2. Step 2: Convert to fraction form
    42,955.46/64,399.73 = 20,454.54/x
  3. Step 3: Cross multiply
    42,955.46x = 64,399.73 × 20,454.54
  4. Step 4: Simplify right side
    42,955.46x = 1,317,266,871.75
  5. Step 5: Solve for x
    x = 1,317,266,871.75/42,955.46
  6. Step 6: Final answer
    x = 30,665.87

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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.