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Finding the Fourth Proportional to 70,243.43, 96,935.81 and 40,028.81

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Solution

The fourth proportional to 70,243.43, 96,935.81 and 40,028.81 is: 55,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,243.43 : 96,935.81 = 40,028.81 : x
  2. Step 2: Convert to fraction form
    70,243.43/96,935.81 = 40,028.81/x
  3. Step 3: Cross multiply
    70,243.43x = 96,935.81 × 40,028.81
  4. Step 4: Simplify right side
    70,243.43x = 3,880,224,435.86
  5. Step 5: Solve for x
    x = 3,880,224,435.86/70,243.43
  6. Step 6: Final answer
    x = 55,239.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.