Home / 45,401.10-68,123.61-20,458.86

Finding the Fourth Proportional to 45,401.10, 68,123.61 and 20,458.86

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Solution

The fourth proportional to 45,401.10, 68,123.61 and 20,458.86 is: 30,698.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,401.10 : 68,123.61 = 20,458.86 : x
  2. Step 2: Convert to fraction form
    45,401.10/68,123.61 = 20,458.86/x
  3. Step 3: Cross multiply
    45,401.10x = 68,123.61 × 20,458.86
  4. Step 4: Simplify right side
    45,401.10x = 1,393,731,399.68
  5. Step 5: Solve for x
    x = 1,393,731,399.68/45,401.10
  6. Step 6: Final answer
    x = 30,698.19

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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.