Home / 70,476.08-105,719.38-20,556.59

Finding the Fourth Proportional to 70,476.08, 105,719.38 and 20,556.59

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Solution

The fourth proportional to 70,476.08, 105,719.38 and 20,556.59 is: 30,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,476.08 : 105,719.38 = 20,556.59 : x
  2. Step 2: Convert to fraction form
    70,476.08/105,719.38 = 20,556.59/x
  3. Step 3: Cross multiply
    70,476.08x = 105,719.38 × 20,556.59
  4. Step 4: Simplify right side
    70,476.08x = 2,173,229,369.73
  5. Step 5: Solve for x
    x = 2,173,229,369.73/70,476.08
  6. Step 6: Final answer
    x = 30,836.41

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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.