Home / 42,619.20-63,877.74-30,120.48

Finding the Fourth Proportional to 42,619.20, 63,877.74 and 30,120.48

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Solution

The fourth proportional to 42,619.20, 63,877.74 and 30,120.48 is: 45,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,619.20 : 63,877.74 = 30,120.48 : x
  2. Step 2: Convert to fraction form
    42,619.20/63,877.74 = 30,120.48/x
  3. Step 3: Cross multiply
    42,619.20x = 63,877.74 × 30,120.48
  4. Step 4: Simplify right side
    42,619.20x = 1,924,028,190.12
  5. Step 5: Solve for x
    x = 1,924,028,190.12/42,619.20
  6. Step 6: Final answer
    x = 45,144.63

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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.