Home / 68,274.16-102,429.83-20,888.21

Finding the Fourth Proportional to 68,274.16, 102,429.83 and 20,888.21

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Solution

The fourth proportional to 68,274.16, 102,429.83 and 20,888.21 is: 31,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,274.16 : 102,429.83 = 20,888.21 : x
  2. Step 2: Convert to fraction form
    68,274.16/102,429.83 = 20,888.21/x
  3. Step 3: Cross multiply
    68,274.16x = 102,429.83 × 20,888.21
  4. Step 4: Simplify right side
    68,274.16x = 2,139,576,107.60
  5. Step 5: Solve for x
    x = 2,139,576,107.60/68,274.16
  6. Step 6: Final answer
    x = 31,338.01

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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.