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Finding the Fourth Proportional to 65,120.00, 97,687.13 and 20,736.32

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Solution

The fourth proportional to 65,120.00, 97,687.13 and 20,736.32 is: 31,106.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,120.00 : 97,687.13 = 20,736.32 : x
  2. Step 2: Convert to fraction form
    65,120.00/97,687.13 = 20,736.32/x
  3. Step 3: Cross multiply
    65,120.00x = 97,687.13 × 20,736.32
  4. Step 4: Simplify right side
    65,120.00x = 2,025,670,995.44
  5. Step 5: Solve for x
    x = 2,025,670,995.44/65,120.00
  6. Step 6: Final answer
    x = 31,106.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.