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Finding the Fourth Proportional to 90,444, 124,812.72 and 50,163.93

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Solution

The fourth proportional to 90,444, 124,812.72 and 50,163.93 is: 69,226.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,444 : 124,812.72 = 50,163.93 : x
  2. Step 2: Convert to fraction form
    90,444/124,812.72 = 50,163.93/x
  3. Step 3: Cross multiply
    90,444x = 124,812.72 × 50,163.93
  4. Step 4: Simplify right side
    90,444x = 6,261,096,549.19
  5. Step 5: Solve for x
    x = 6,261,096,549.19/90,444
  6. Step 6: Final answer
    x = 69,226.22

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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.