Home / 45,511.50-68,278.77-12,679.50

Finding the Fourth Proportional to 45,511.50, 68,278.77 and 12,679.50

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Solution

The fourth proportional to 45,511.50, 68,278.77 and 12,679.50 is: 19,022.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,511.50 : 68,278.77 = 12,679.50 : x
  2. Step 2: Convert to fraction form
    45,511.50/68,278.77 = 12,679.50/x
  3. Step 3: Cross multiply
    45,511.50x = 68,278.77 × 12,679.50
  4. Step 4: Simplify right side
    45,511.50x = 865,740,664.22
  5. Step 5: Solve for x
    x = 865,740,664.22/45,511.50
  6. Step 6: Final answer
    x = 19,022.46

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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.