Home / 45,651.60-68,478.30-20,687.04

Finding the Fourth Proportional to 45,651.60, 68,478.30 and 20,687.04

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Solution

The fourth proportional to 45,651.60, 68,478.30 and 20,687.04 is: 31,030.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,651.60 : 68,478.30 = 20,687.04 : x
  2. Step 2: Convert to fraction form
    45,651.60/68,478.30 = 20,687.04/x
  3. Step 3: Cross multiply
    45,651.60x = 68,478.30 × 20,687.04
  4. Step 4: Simplify right side
    45,651.60x = 1,416,613,331.23
  5. Step 5: Solve for x
    x = 1,416,613,331.23/45,651.60
  6. Step 6: Final answer
    x = 31,030.97

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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.