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Finding the Fourth Proportional to 64,977.64, 97,471.56 and 20,606.92

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Solution

The fourth proportional to 64,977.64, 97,471.56 and 20,606.92 is: 30,912.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.64 : 97,471.56 = 20,606.92 : x
  2. Step 2: Convert to fraction form
    64,977.64/97,471.56 = 20,606.92/x
  3. Step 3: Cross multiply
    64,977.64x = 97,471.56 × 20,606.92
  4. Step 4: Simplify right side
    64,977.64x = 2,008,588,639.20
  5. Step 5: Solve for x
    x = 2,008,588,639.20/64,977.64
  6. Step 6: Final answer
    x = 30,912.00

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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.