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Finding the Fourth Proportional to 64,745.04, 97,117.50 and 20,375.16

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Solution

The fourth proportional to 64,745.04, 97,117.50 and 20,375.16 is: 30,562.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.04 : 97,117.50 = 20,375.16 : x
  2. Step 2: Convert to fraction form
    64,745.04/97,117.50 = 20,375.16/x
  3. Step 3: Cross multiply
    64,745.04x = 97,117.50 × 20,375.16
  4. Step 4: Simplify right side
    64,745.04x = 1,978,784,601.30
  5. Step 5: Solve for x
    x = 1,978,784,601.30/64,745.04
  6. Step 6: Final answer
    x = 30,562.72

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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.