Home / 85,431.33-117,892.84-47,190.17

Finding the Fourth Proportional to 85,431.33, 117,892.84 and 47,190.17

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Solution

The fourth proportional to 85,431.33, 117,892.84 and 47,190.17 is: 65,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,431.33 : 117,892.84 = 47,190.17 : x
  2. Step 2: Convert to fraction form
    85,431.33/117,892.84 = 47,190.17/x
  3. Step 3: Cross multiply
    85,431.33x = 117,892.84 × 47,190.17
  4. Step 4: Simplify right side
    85,431.33x = 5,563,382,896.04
  5. Step 5: Solve for x
    x = 5,563,382,896.04/85,431.33
  6. Step 6: Final answer
    x = 65,121.11

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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.