Home / 43,478.91-65,202.98-20,680.07

Finding the Fourth Proportional to 43,478.91, 65,202.98 and 20,680.07

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Solution

The fourth proportional to 43,478.91, 65,202.98 and 20,680.07 is: 31,012.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,478.91 : 65,202.98 = 20,680.07 : x
  2. Step 2: Convert to fraction form
    43,478.91/65,202.98 = 20,680.07/x
  3. Step 3: Cross multiply
    43,478.91x = 65,202.98 × 20,680.07
  4. Step 4: Simplify right side
    43,478.91x = 1,348,402,087.21
  5. Step 5: Solve for x
    x = 1,348,402,087.21/43,478.91
  6. Step 6: Final answer
    x = 31,012.79

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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.