Home / 85,431.21-117,892.67-47,190.04

Finding the Fourth Proportional to 85,431.21, 117,892.67 and 47,190.04

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Solution

The fourth proportional to 85,431.21, 117,892.67 and 47,190.04 is: 65,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,431.21 : 117,892.67 = 47,190.04 : x
  2. Step 2: Convert to fraction form
    85,431.21/117,892.67 = 47,190.04/x
  3. Step 3: Cross multiply
    85,431.21x = 117,892.67 × 47,190.04
  4. Step 4: Simplify right side
    85,431.21x = 5,563,359,945.47
  5. Step 5: Solve for x
    x = 5,563,359,945.47/85,431.21
  6. Step 6: Final answer
    x = 65,120.93

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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.