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Finding the Fourth Proportional to 89,077.76, 122,868.24 and 57,286.88

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Solution

The fourth proportional to 89,077.76, 122,868.24 and 57,286.88 is: 79,017.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,077.76 : 122,868.24 = 57,286.88 : x
  2. Step 2: Convert to fraction form
    89,077.76/122,868.24 = 57,286.88/x
  3. Step 3: Cross multiply
    89,077.76x = 122,868.24 × 57,286.88
  4. Step 4: Simplify right side
    89,077.76x = 7,038,738,120.69
  5. Step 5: Solve for x
    x = 7,038,738,120.69/89,077.76
  6. Step 6: Final answer
    x = 79,017.91

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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.