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Finding the Fourth Proportional to 65,474.09, 90,356.42 and 36,798.74

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Solution

The fourth proportional to 65,474.09, 90,356.42 and 36,798.74 is: 50,783.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,474.09 : 90,356.42 = 36,798.74 : x
  2. Step 2: Convert to fraction form
    65,474.09/90,356.42 = 36,798.74/x
  3. Step 3: Cross multiply
    65,474.09x = 90,356.42 × 36,798.74
  4. Step 4: Simplify right side
    65,474.09x = 3,325,002,222.92
  5. Step 5: Solve for x
    x = 3,325,002,222.92/65,474.09
  6. Step 6: Final answer
    x = 50,783.48

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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.