Home / 85,013.28-117,171.36-63,755.64

Finding the Fourth Proportional to 85,013.28, 117,171.36 and 63,755.64

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Solution

The fourth proportional to 85,013.28, 117,171.36 and 63,755.64 is: 87,872.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,013.28 : 117,171.36 = 63,755.64 : x
  2. Step 2: Convert to fraction form
    85,013.28/117,171.36 = 63,755.64/x
  3. Step 3: Cross multiply
    85,013.28x = 117,171.36 × 63,755.64
  4. Step 4: Simplify right side
    85,013.28x = 7,470,335,046.47
  5. Step 5: Solve for x
    x = 7,470,335,046.47/85,013.28
  6. Step 6: Final answer
    x = 87,872.57

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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.