Home / 66,845.94-92,247.40-39,989.58

Finding the Fourth Proportional to 66,845.94, 92,247.40 and 39,989.58

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Solution

The fourth proportional to 66,845.94, 92,247.40 and 39,989.58 is: 55,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,845.94 : 92,247.40 = 39,989.58 : x
  2. Step 2: Convert to fraction form
    66,845.94/92,247.40 = 39,989.58/x
  3. Step 3: Cross multiply
    66,845.94x = 92,247.40 × 39,989.58
  4. Step 4: Simplify right side
    66,845.94x = 3,688,934,782.09
  5. Step 5: Solve for x
    x = 3,688,934,782.09/66,845.94
  6. Step 6: Final answer
    x = 55,185.62

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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.