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Finding the Fourth Proportional to 70,157.85, 96,845.54 and 43,311.21

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Solution

The fourth proportional to 70,157.85, 96,845.54 and 43,311.21 is: 59,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,157.85 : 96,845.54 = 43,311.21 : x
  2. Step 2: Convert to fraction form
    70,157.85/96,845.54 = 43,311.21/x
  3. Step 3: Cross multiply
    70,157.85x = 96,845.54 × 43,311.21
  4. Step 4: Simplify right side
    70,157.85x = 4,194,497,303.95
  5. Step 5: Solve for x
    x = 4,194,497,303.95/70,157.85
  6. Step 6: Final answer
    x = 59,786.57

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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.