Home / 45,665.36-68,489.82-20,700.75

Finding the Fourth Proportional to 45,665.36, 68,489.82 and 20,700.75

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Solution

The fourth proportional to 45,665.36, 68,489.82 and 20,700.75 is: 31,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,665.36 : 68,489.82 = 20,700.75 : x
  2. Step 2: Convert to fraction form
    45,665.36/68,489.82 = 20,700.75/x
  3. Step 3: Cross multiply
    45,665.36x = 68,489.82 × 20,700.75
  4. Step 4: Simplify right side
    45,665.36x = 1,417,790,641.37
  5. Step 5: Solve for x
    x = 1,417,790,641.37/45,665.36
  6. Step 6: Final answer
    x = 31,047.40

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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.