Home / 70,170.79-105,185.23-30,215.83

Finding the Fourth Proportional to 70,170.79, 105,185.23 and 30,215.83

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Solution

The fourth proportional to 70,170.79, 105,185.23 and 30,215.83 is: 45,293.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,170.79 : 105,185.23 = 30,215.83 : x
  2. Step 2: Convert to fraction form
    70,170.79/105,185.23 = 30,215.83/x
  3. Step 3: Cross multiply
    70,170.79x = 105,185.23 × 30,215.83
  4. Step 4: Simplify right side
    70,170.79x = 3,178,259,028.19
  5. Step 5: Solve for x
    x = 3,178,259,028.19/70,170.79
  6. Step 6: Final answer
    x = 45,293.19

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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.