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Finding the Fourth Proportional to 64,930.94, 97,410.99 and 20,554.28

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Solution

The fourth proportional to 64,930.94, 97,410.99 and 20,554.28 is: 30,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,930.94 : 97,410.99 = 20,554.28 : x
  2. Step 2: Convert to fraction form
    64,930.94/97,410.99 = 20,554.28/x
  3. Step 3: Cross multiply
    64,930.94x = 97,410.99 × 20,554.28
  4. Step 4: Simplify right side
    64,930.94x = 2,002,212,763.54
  5. Step 5: Solve for x
    x = 2,002,212,763.54/64,930.94
  6. Step 6: Final answer
    x = 30,836.04

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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.