Home / 66,821.53-92,213.70-39,964.04

Finding the Fourth Proportional to 66,821.53, 92,213.70 and 39,964.04

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Solution

The fourth proportional to 66,821.53, 92,213.70 and 39,964.04 is: 55,150.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,821.53 : 92,213.70 = 39,964.04 : x
  2. Step 2: Convert to fraction form
    66,821.53/92,213.70 = 39,964.04/x
  3. Step 3: Cross multiply
    66,821.53x = 92,213.70 × 39,964.04
  4. Step 4: Simplify right side
    66,821.53x = 3,685,231,995.35
  5. Step 5: Solve for x
    x = 3,685,231,995.35/66,821.53
  6. Step 6: Final answer
    x = 55,150.37

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1.5x scale

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.