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Finding the Fourth Proportional to 66,919.02, 100,399.32 and 40,294.32

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Solution

The fourth proportional to 66,919.02, 100,399.32 and 40,294.32 is: 60,454.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,919.02 : 100,399.32 = 40,294.32 : x
  2. Step 2: Convert to fraction form
    66,919.02/100,399.32 = 40,294.32/x
  3. Step 3: Cross multiply
    66,919.02x = 100,399.32 × 40,294.32
  4. Step 4: Simplify right side
    66,919.02x = 4,045,522,327.86
  5. Step 5: Solve for x
    x = 4,045,522,327.86/66,919.02
  6. Step 6: Final answer
    x = 60,454.00

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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.