Home / 75,620.45-113,422.02-20,220.77

Finding the Fourth Proportional to 75,620.45, 113,422.02 and 20,220.77

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Solution

The fourth proportional to 75,620.45, 113,422.02 and 20,220.77 is: 30,328.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,620.45 : 113,422.02 = 20,220.77 : x
  2. Step 2: Convert to fraction form
    75,620.45/113,422.02 = 20,220.77/x
  3. Step 3: Cross multiply
    75,620.45x = 113,422.02 × 20,220.77
  4. Step 4: Simplify right side
    75,620.45x = 2,293,480,579.36
  5. Step 5: Solve for x
    x = 2,293,480,579.36/75,620.45
  6. Step 6: Final answer
    x = 30,328.84

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1.5x scale

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.