Home / 86,635.35-119,447.89-66,242.43

Finding the Fourth Proportional to 86,635.35, 119,447.89 and 66,242.43

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Solution

The fourth proportional to 86,635.35, 119,447.89 and 66,242.43 is: 91,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,635.35 : 119,447.89 = 66,242.43 : x
  2. Step 2: Convert to fraction form
    86,635.35/119,447.89 = 66,242.43/x
  3. Step 3: Cross multiply
    86,635.35x = 119,447.89 × 66,242.43
  4. Step 4: Simplify right side
    86,635.35x = 7,912,518,491.97
  5. Step 5: Solve for x
    x = 7,912,518,491.97/86,635.35
  6. Step 6: Final answer
    x = 91,331.29

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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.