Home / 49,649.20-74,459.40-20,057.20

Finding the Fourth Proportional to 49,649.20, 74,459.40 and 20,057.20

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Solution

The fourth proportional to 49,649.20, 74,459.40 and 20,057.20 is: 30,079.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,649.20 : 74,459.40 = 20,057.20 : x
  2. Step 2: Convert to fraction form
    49,649.20/74,459.40 = 20,057.20/x
  3. Step 3: Cross multiply
    49,649.20x = 74,459.40 × 20,057.20
  4. Step 4: Simplify right side
    49,649.20x = 1,493,447,077.68
  5. Step 5: Solve for x
    x = 1,493,447,077.68/49,649.20
  6. Step 6: Final answer
    x = 30,079.98

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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.