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Finding the Fourth Proportional to 69,996.84, 104,963.64 and 20,065.56

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Solution

The fourth proportional to 69,996.84, 104,963.64 and 20,065.56 is: 30,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,996.84 : 104,963.64 = 20,065.56 : x
  2. Step 2: Convert to fraction form
    69,996.84/104,963.64 = 20,065.56/x
  3. Step 3: Cross multiply
    69,996.84x = 104,963.64 × 20,065.56
  4. Step 4: Simplify right side
    69,996.84x = 2,106,154,216.24
  5. Step 5: Solve for x
    x = 2,106,154,216.24/69,996.84
  6. Step 6: Final answer
    x = 30,089.28

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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.