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Finding the Fourth Proportional to 65,961.42, 98,964 and 43,861.79

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Solution

The fourth proportional to 65,961.42, 98,964 and 43,861.79 is: 65,807.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,961.42 : 98,964 = 43,861.79 : x
  2. Step 2: Convert to fraction form
    65,961.42/98,964 = 43,861.79/x
  3. Step 3: Cross multiply
    65,961.42x = 98,964 × 43,861.79
  4. Step 4: Simplify right side
    65,961.42x = 4,340,737,690.74
  5. Step 5: Solve for x
    x = 4,340,737,690.74/65,961.42
  6. Step 6: Final answer
    x = 65,807.22

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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.