Home / 45,265.36-67,890.21-11,985.90

Finding the Fourth Proportional to 45,265.36, 67,890.21 and 11,985.90

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Solution

The fourth proportional to 45,265.36, 67,890.21 and 11,985.90 is: 17,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,265.36 : 67,890.21 = 11,985.90 : x
  2. Step 2: Convert to fraction form
    45,265.36/67,890.21 = 11,985.90/x
  3. Step 3: Cross multiply
    45,265.36x = 67,890.21 × 11,985.90
  4. Step 4: Simplify right side
    45,265.36x = 813,725,322.94
  5. Step 5: Solve for x
    x = 813,725,322.94/45,265.36
  6. Step 6: Final answer
    x = 17,976.78

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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.