Home / 71,511.45-107,246.71-28,816.75

Finding the Fourth Proportional to 71,511.45, 107,246.71 and 28,816.75

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Solution

The fourth proportional to 71,511.45, 107,246.71 and 28,816.75 is: 43,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.45 : 107,246.71 = 28,816.75 : x
  2. Step 2: Convert to fraction form
    71,511.45/107,246.71 = 28,816.75/x
  3. Step 3: Cross multiply
    71,511.45x = 107,246.71 × 28,816.75
  4. Step 4: Simplify right side
    71,511.45x = 3,090,501,630.39
  5. Step 5: Solve for x
    x = 3,090,501,630.39/71,511.45
  6. Step 6: Final answer
    x = 43,216.88

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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.