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Finding the Fourth Proportional to 67,365.12, 100,840.32 and 43,941.12

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Solution

The fourth proportional to 67,365.12, 100,840.32 and 43,941.12 is: 65,776.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,365.12 : 100,840.32 = 43,941.12 : x
  2. Step 2: Convert to fraction form
    67,365.12/100,840.32 = 43,941.12/x
  3. Step 3: Cross multiply
    67,365.12x = 100,840.32 × 43,941.12
  4. Step 4: Simplify right side
    67,365.12x = 4,431,036,601.96
  5. Step 5: Solve for x
    x = 4,431,036,601.96/67,365.12
  6. Step 6: Final answer
    x = 65,776.42

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1.5x scale

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.