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Finding the Fourth Proportional to 65,699.42, 98,532.72 and 21,338.87

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Solution

The fourth proportional to 65,699.42, 98,532.72 and 21,338.87 is: 32,002.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.42 : 98,532.72 = 21,338.87 : x
  2. Step 2: Convert to fraction form
    65,699.42/98,532.72 = 21,338.87/x
  3. Step 3: Cross multiply
    65,699.42x = 98,532.72 × 21,338.87
  4. Step 4: Simplify right side
    65,699.42x = 2,102,576,410.16
  5. Step 5: Solve for x
    x = 2,102,576,410.16/65,699.42
  6. Step 6: Final answer
    x = 32,002.97

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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.