Home / 70,262.38-105,399.10-20,343.26

Finding the Fourth Proportional to 70,262.38, 105,399.10 and 20,343.26

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Solution

The fourth proportional to 70,262.38, 105,399.10 and 20,343.26 is: 30,516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,262.38 : 105,399.10 = 20,343.26 : x
  2. Step 2: Convert to fraction form
    70,262.38/105,399.10 = 20,343.26/x
  3. Step 3: Cross multiply
    70,262.38x = 105,399.10 × 20,343.26
  4. Step 4: Simplify right side
    70,262.38x = 2,144,161,295.07
  5. Step 5: Solve for x
    x = 2,144,161,295.07/70,262.38
  6. Step 6: Final answer
    x = 30,516.49

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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.