Home / 80,975.81-111,688.74-70,201.41

Finding the Fourth Proportional to 80,975.81, 111,688.74 and 70,201.41

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Solution

The fourth proportional to 80,975.81, 111,688.74 and 70,201.41 is: 96,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,975.81 : 111,688.74 = 70,201.41 : x
  2. Step 2: Convert to fraction form
    80,975.81/111,688.74 = 70,201.41/x
  3. Step 3: Cross multiply
    80,975.81x = 111,688.74 × 70,201.41
  4. Step 4: Simplify right side
    80,975.81x = 7,840,707,029.12
  5. Step 5: Solve for x
    x = 7,840,707,029.12/80,975.81
  6. Step 6: Final answer
    x = 96,827.78

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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.