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Finding the Fourth Proportional to 64,808.72, 97,103.64 and 39,796.64

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Solution

The fourth proportional to 64,808.72, 97,103.64 and 39,796.64 is: 59,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808.72 : 97,103.64 = 39,796.64 : x
  2. Step 2: Convert to fraction form
    64,808.72/97,103.64 = 39,796.64/x
  3. Step 3: Cross multiply
    64,808.72x = 97,103.64 × 39,796.64
  4. Step 4: Simplify right side
    64,808.72x = 3,864,398,603.77
  5. Step 5: Solve for x
    x = 3,864,398,603.77/64,808.72
  6. Step 6: Final answer
    x = 59,627.76

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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.