Home / 45,431.27-68,109.65-20,463.83

Finding the Fourth Proportional to 45,431.27, 68,109.65 and 20,463.83

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Solution

The fourth proportional to 45,431.27, 68,109.65 and 20,463.83 is: 30,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,431.27 : 68,109.65 = 20,463.83 : x
  2. Step 2: Convert to fraction form
    45,431.27/68,109.65 = 20,463.83/x
  3. Step 3: Cross multiply
    45,431.27x = 68,109.65 × 20,463.83
  4. Step 4: Simplify right side
    45,431.27x = 1,393,784,366.91
  5. Step 5: Solve for x
    x = 1,393,784,366.91/45,431.27
  6. Step 6: Final answer
    x = 30,678.96

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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.