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Finding the Fourth Proportional to 64,889.56, 97,333.72 and 20,516.31

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Solution

The fourth proportional to 64,889.56, 97,333.72 and 20,516.31 is: 30,774.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,889.56 : 97,333.72 = 20,516.31 : x
  2. Step 2: Convert to fraction form
    64,889.56/97,333.72 = 20,516.31/x
  3. Step 3: Cross multiply
    64,889.56x = 97,333.72 × 20,516.31
  4. Step 4: Simplify right side
    64,889.56x = 1,996,928,772.97
  5. Step 5: Solve for x
    x = 1,996,928,772.97/64,889.56
  6. Step 6: Final answer
    x = 30,774.27

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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.