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Finding the Fourth Proportional to 69,014.80, 103,419.60 and 35,690.40

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Solution

The fourth proportional to 69,014.80, 103,419.60 and 35,690.40 is: 53,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,014.80 : 103,419.60 = 35,690.40 : x
  2. Step 2: Convert to fraction form
    69,014.80/103,419.60 = 35,690.40/x
  3. Step 3: Cross multiply
    69,014.80x = 103,419.60 × 35,690.40
  4. Step 4: Simplify right side
    69,014.80x = 3,691,086,891.84
  5. Step 5: Solve for x
    x = 3,691,086,891.84/69,014.80
  6. Step 6: Final answer
    x = 53,482.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.