Home / 45,313.11-67,871.12-21,890.25

Finding the Fourth Proportional to 45,313.11, 67,871.12 and 21,890.25

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Solution

The fourth proportional to 45,313.11, 67,871.12 and 21,890.25 is: 32,787.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,313.11 : 67,871.12 = 21,890.25 : x
  2. Step 2: Convert to fraction form
    45,313.11/67,871.12 = 21,890.25/x
  3. Step 3: Cross multiply
    45,313.11x = 67,871.12 × 21,890.25
  4. Step 4: Simplify right side
    45,313.11x = 1,485,715,675.13
  5. Step 5: Solve for x
    x = 1,485,715,675.13/45,313.11
  6. Step 6: Final answer
    x = 32,787.77

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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.