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Finding the Fourth Proportional to 64,198.72, 88,629.06 and 38,709.64

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Solution

The fourth proportional to 64,198.72, 88,629.06 and 38,709.64 is: 53,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,198.72 : 88,629.06 = 38,709.64 : x
  2. Step 2: Convert to fraction form
    64,198.72/88,629.06 = 38,709.64/x
  3. Step 3: Cross multiply
    64,198.72x = 88,629.06 × 38,709.64
  4. Step 4: Simplify right side
    64,198.72x = 3,430,799,006.14
  5. Step 5: Solve for x
    x = 3,430,799,006.14/64,198.72
  6. Step 6: Final answer
    x = 53,440.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.