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Finding the Fourth Proportional to 66,105.63, 91,225.80 and 35,890.92

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Solution

The fourth proportional to 66,105.63, 91,225.80 and 35,890.92 is: 49,529.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.63 : 91,225.80 = 35,890.92 : x
  2. Step 2: Convert to fraction form
    66,105.63/91,225.80 = 35,890.92/x
  3. Step 3: Cross multiply
    66,105.63x = 91,225.80 × 35,890.92
  4. Step 4: Simplify right side
    66,105.63x = 3,274,177,889.74
  5. Step 5: Solve for x
    x = 3,274,177,889.74/66,105.63
  6. Step 6: Final answer
    x = 49,529.49

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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.