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Finding the Fourth Proportional to 69,648, 104,384.40 and 49,965.12

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Solution

The fourth proportional to 69,648, 104,384.40 and 49,965.12 is: 74,884.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,648 : 104,384.40 = 49,965.12 : x
  2. Step 2: Convert to fraction form
    69,648/104,384.40 = 49,965.12/x
  3. Step 3: Cross multiply
    69,648x = 104,384.40 × 49,965.12
  4. Step 4: Simplify right side
    69,648x = 5,215,579,072.13
  5. Step 5: Solve for x
    x = 5,215,579,072.13/69,648
  6. Step 6: Final answer
    x = 74,884.84

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1.5x scale

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.