Home / 80,679.36-111,222.10-53,812.06

Finding the Fourth Proportional to 80,679.36, 111,222.10 and 53,812.06

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Solution

The fourth proportional to 80,679.36, 111,222.10 and 53,812.06 is: 74,183.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,679.36 : 111,222.10 = 53,812.06 : x
  2. Step 2: Convert to fraction form
    80,679.36/111,222.10 = 53,812.06/x
  3. Step 3: Cross multiply
    80,679.36x = 111,222.10 × 53,812.06
  4. Step 4: Simplify right side
    80,679.36x = 5,985,090,318.53
  5. Step 5: Solve for x
    x = 5,985,090,318.53/80,679.36
  6. Step 6: Final answer
    x = 74,183.66

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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.