Home / 71,811.54-107,717.36-19,219.64

Finding the Fourth Proportional to 71,811.54, 107,717.36 and 19,219.64

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Solution

The fourth proportional to 71,811.54, 107,717.36 and 19,219.64 is: 28,829.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.54 : 107,717.36 = 19,219.64 : x
  2. Step 2: Convert to fraction form
    71,811.54/107,717.36 = 19,219.64/x
  3. Step 3: Cross multiply
    71,811.54x = 107,717.36 × 19,219.64
  4. Step 4: Simplify right side
    71,811.54x = 2,070,288,246.27
  5. Step 5: Solve for x
    x = 2,070,288,246.27/71,811.54
  6. Step 6: Final answer
    x = 28,829.46

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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.