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Finding the Fourth Proportional to 65,175.56, 89,921.36 and 36,491.00

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Solution

The fourth proportional to 65,175.56, 89,921.36 and 36,491.00 is: 50,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,175.56 : 89,921.36 = 36,491.00 : x
  2. Step 2: Convert to fraction form
    65,175.56/89,921.36 = 36,491.00/x
  3. Step 3: Cross multiply
    65,175.56x = 89,921.36 × 36,491.00
  4. Step 4: Simplify right side
    65,175.56x = 3,281,319,989.38
  5. Step 5: Solve for x
    x = 3,281,319,989.38/65,175.56
  6. Step 6: Final answer
    x = 50,345.86

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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.