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Finding the Fourth Proportional to 65,367.15, 90,203.94 and 37,078.17

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Solution

The fourth proportional to 65,367.15, 90,203.94 and 37,078.17 is: 51,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,367.15 : 90,203.94 = 37,078.17 : x
  2. Step 2: Convert to fraction form
    65,367.15/90,203.94 = 37,078.17/x
  3. Step 3: Cross multiply
    65,367.15x = 90,203.94 × 37,078.17
  4. Step 4: Simplify right side
    65,367.15x = 3,344,597,021.99
  5. Step 5: Solve for x
    x = 3,344,597,021.99/65,367.15
  6. Step 6: Final answer
    x = 51,166.33

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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.