Home / 66,136.79-91,258.11-40,634.96

Finding the Fourth Proportional to 66,136.79, 91,258.11 and 40,634.96

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Solution

The fourth proportional to 66,136.79, 91,258.11 and 40,634.96 is: 56,069.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,136.79 : 91,258.11 = 40,634.96 : x
  2. Step 2: Convert to fraction form
    66,136.79/91,258.11 = 40,634.96/x
  3. Step 3: Cross multiply
    66,136.79x = 91,258.11 × 40,634.96
  4. Step 4: Simplify right side
    66,136.79x = 3,708,269,193.24
  5. Step 5: Solve for x
    x = 3,708,269,193.24/66,136.79
  6. Step 6: Final answer
    x = 56,069.69

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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.