Home / 70,231.23-105,331.14-20,300.22

Finding the Fourth Proportional to 70,231.23, 105,331.14 and 20,300.22

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Solution

The fourth proportional to 70,231.23, 105,331.14 and 20,300.22 is: 30,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.23 : 105,331.14 = 20,300.22 : x
  2. Step 2: Convert to fraction form
    70,231.23/105,331.14 = 20,300.22/x
  3. Step 3: Cross multiply
    70,231.23x = 105,331.14 × 20,300.22
  4. Step 4: Simplify right side
    70,231.23x = 2,138,245,314.85
  5. Step 5: Solve for x
    x = 2,138,245,314.85/70,231.23
  6. Step 6: Final answer
    x = 30,445.79

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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.