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Finding the Fourth Proportional to 65,450.73, 90,325.80 and 49,289.10

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Solution

The fourth proportional to 65,450.73, 90,325.80 and 49,289.10 is: 68,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,450.73 : 90,325.80 = 49,289.10 : x
  2. Step 2: Convert to fraction form
    65,450.73/90,325.80 = 49,289.10/x
  3. Step 3: Cross multiply
    65,450.73x = 90,325.80 × 49,289.10
  4. Step 4: Simplify right side
    65,450.73x = 4,452,077,388.78
  5. Step 5: Solve for x
    x = 4,452,077,388.78/65,450.73
  6. Step 6: Final answer
    x = 68,021.81

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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.