Home / 85,583.53-118,105.50-47,857.78

Finding the Fourth Proportional to 85,583.53, 118,105.50 and 47,857.78

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Solution

The fourth proportional to 85,583.53, 118,105.50 and 47,857.78 is: 66,043.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.53 : 118,105.50 = 47,857.78 : x
  2. Step 2: Convert to fraction form
    85,583.53/118,105.50 = 47,857.78/x
  3. Step 3: Cross multiply
    85,583.53x = 118,105.50 × 47,857.78
  4. Step 4: Simplify right side
    85,583.53x = 5,652,267,035.79
  5. Step 5: Solve for x
    x = 5,652,267,035.79/85,583.53
  6. Step 6: Final answer
    x = 66,043.86

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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.