Home / 66,490.28-91,744.03-39,635.29

Finding the Fourth Proportional to 66,490.28, 91,744.03 and 39,635.29

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Solution

The fourth proportional to 66,490.28, 91,744.03 and 39,635.29 is: 54,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.28 : 91,744.03 = 39,635.29 : x
  2. Step 2: Convert to fraction form
    66,490.28/91,744.03 = 39,635.29/x
  3. Step 3: Cross multiply
    66,490.28x = 91,744.03 × 39,635.29
  4. Step 4: Simplify right side
    66,490.28x = 3,636,300,906.37
  5. Step 5: Solve for x
    x = 3,636,300,906.37/66,490.28
  6. Step 6: Final answer
    x = 54,689.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.