Home / 66,136.32-91,229.76-43,479.36

Finding the Fourth Proportional to 66,136.32, 91,229.76 and 43,479.36

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Solution

The fourth proportional to 66,136.32, 91,229.76 and 43,479.36 is: 59,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,136.32 : 91,229.76 = 43,479.36 : x
  2. Step 2: Convert to fraction form
    66,136.32/91,229.76 = 43,479.36/x
  3. Step 3: Cross multiply
    66,136.32x = 91,229.76 × 43,479.36
  4. Step 4: Simplify right side
    66,136.32x = 3,966,611,577.75
  5. Step 5: Solve for x
    x = 3,966,611,577.75/66,136.32
  6. Step 6: Final answer
    x = 59,976.30

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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.