Home / 45,415.10-68,121.84-20,437.46

Finding the Fourth Proportional to 45,415.10, 68,121.84 and 20,437.46

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Solution

The fourth proportional to 45,415.10, 68,121.84 and 20,437.46 is: 30,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,415.10 : 68,121.84 = 20,437.46 : x
  2. Step 2: Convert to fraction form
    45,415.10/68,121.84 = 20,437.46/x
  3. Step 3: Cross multiply
    45,415.10x = 68,121.84 × 20,437.46
  4. Step 4: Simplify right side
    45,415.10x = 1,392,237,380.13
  5. Step 5: Solve for x
    x = 1,392,237,380.13/45,415.10
  6. Step 6: Final answer
    x = 30,655.83

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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.