Home / 71,865.07-107,789.34-19,270.42

Finding the Fourth Proportional to 71,865.07, 107,789.34 and 19,270.42

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Solution

The fourth proportional to 71,865.07, 107,789.34 and 19,270.42 is: 28,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,865.07 : 107,789.34 = 19,270.42 : x
  2. Step 2: Convert to fraction form
    71,865.07/107,789.34 = 19,270.42/x
  3. Step 3: Cross multiply
    71,865.07x = 107,789.34 × 19,270.42
  4. Step 4: Simplify right side
    71,865.07x = 2,077,145,853.32
  5. Step 5: Solve for x
    x = 2,077,145,853.32/71,865.07
  6. Step 6: Final answer
    x = 28,903.41

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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.