Home / 89,121.96-122,980.14-51,388.92

Finding the Fourth Proportional to 89,121.96, 122,980.14 and 51,388.92

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Solution

The fourth proportional to 89,121.96, 122,980.14 and 51,388.92 is: 70,912.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,121.96 : 122,980.14 = 51,388.92 : x
  2. Step 2: Convert to fraction form
    89,121.96/122,980.14 = 51,388.92/x
  3. Step 3: Cross multiply
    89,121.96x = 122,980.14 × 51,388.92
  4. Step 4: Simplify right side
    89,121.96x = 6,319,816,576.05
  5. Step 5: Solve for x
    x = 6,319,816,576.05/89,121.96
  6. Step 6: Final answer
    x = 70,912.00

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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.