Home / 66,838-92,236.46-39,981.64

Finding the Fourth Proportional to 66,838, 92,236.46 and 39,981.64

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Solution

The fourth proportional to 66,838, 92,236.46 and 39,981.64 is: 55,174.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,838 : 92,236.46 = 39,981.64 : x
  2. Step 2: Convert to fraction form
    66,838/92,236.46 = 39,981.64/x
  3. Step 3: Cross multiply
    66,838x = 92,236.46 × 39,981.64
  4. Step 4: Simplify right side
    66,838x = 3,687,764,938.59
  5. Step 5: Solve for x
    x = 3,687,764,938.59/66,838
  6. Step 6: Final answer
    x = 55,174.68

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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.