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Finding the Fourth Proportional to 65,504.80, 90,396.56 and 35,696.80

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Solution

The fourth proportional to 65,504.80, 90,396.56 and 35,696.80 is: 49,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,504.80 : 90,396.56 = 35,696.80 : x
  2. Step 2: Convert to fraction form
    65,504.80/90,396.56 = 35,696.80/x
  3. Step 3: Cross multiply
    65,504.80x = 90,396.56 × 35,696.80
  4. Step 4: Simplify right side
    65,504.80x = 3,226,867,923.01
  5. Step 5: Solve for x
    x = 3,226,867,923.01/65,504.80
  6. Step 6: Final answer
    x = 49,261.55

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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.