Home / 66,917.45-100,382.08-18,886.49

Finding the Fourth Proportional to 66,917.45, 100,382.08 and 18,886.49

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Solution

The fourth proportional to 66,917.45, 100,382.08 and 18,886.49 is: 28,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.45 : 100,382.08 = 18,886.49 : x
  2. Step 2: Convert to fraction form
    66,917.45/100,382.08 = 18,886.49/x
  3. Step 3: Cross multiply
    66,917.45x = 100,382.08 × 18,886.49
  4. Step 4: Simplify right side
    66,917.45x = 1,895,864,600.97
  5. Step 5: Solve for x
    x = 1,895,864,600.97/66,917.45
  6. Step 6: Final answer
    x = 28,331.39

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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.