Home / 42,458.96-63,661.44-20,260.64

Finding the Fourth Proportional to 42,458.96, 63,661.44 and 20,260.64

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Solution

The fourth proportional to 42,458.96, 63,661.44 and 20,260.64 is: 30,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,458.96 : 63,661.44 = 20,260.64 : x
  2. Step 2: Convert to fraction form
    42,458.96/63,661.44 = 20,260.64/x
  3. Step 3: Cross multiply
    42,458.96x = 63,661.44 × 20,260.64
  4. Step 4: Simplify right side
    42,458.96x = 1,289,821,517.72
  5. Step 5: Solve for x
    x = 1,289,821,517.72/42,458.96
  6. Step 6: Final answer
    x = 30,378.08

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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.