Home / 66,388.32-91,615.86-36,173.62

Finding the Fourth Proportional to 66,388.32, 91,615.86 and 36,173.62

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Solution

The fourth proportional to 66,388.32, 91,615.86 and 36,173.62 is: 49,919.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,388.32 : 91,615.86 = 36,173.62 : x
  2. Step 2: Convert to fraction form
    66,388.32/91,615.86 = 36,173.62/x
  3. Step 3: Cross multiply
    66,388.32x = 91,615.86 × 36,173.62
  4. Step 4: Simplify right side
    66,388.32x = 3,314,076,861.19
  5. Step 5: Solve for x
    x = 3,314,076,861.19/66,388.32
  6. Step 6: Final answer
    x = 49,919.58

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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.