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Finding the Fourth Proportional to 69,709.92, 96,178.48 and 39,490.44

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Solution

The fourth proportional to 69,709.92, 96,178.48 and 39,490.44 is: 54,484.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,709.92 : 96,178.48 = 39,490.44 : x
  2. Step 2: Convert to fraction form
    69,709.92/96,178.48 = 39,490.44/x
  3. Step 3: Cross multiply
    69,709.92x = 96,178.48 × 39,490.44
  4. Step 4: Simplify right side
    69,709.92x = 3,798,130,493.73
  5. Step 5: Solve for x
    x = 3,798,130,493.73/69,709.92
  6. Step 6: Final answer
    x = 54,484.79

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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.