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Finding the Fourth Proportional to 70,076.75, 96,705.50 and 39,861.99

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Solution

The fourth proportional to 70,076.75, 96,705.50 and 39,861.99 is: 55,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,076.75 : 96,705.50 = 39,861.99 : x
  2. Step 2: Convert to fraction form
    70,076.75/96,705.50 = 39,861.99/x
  3. Step 3: Cross multiply
    70,076.75x = 96,705.50 × 39,861.99
  4. Step 4: Simplify right side
    70,076.75x = 3,854,873,474.64
  5. Step 5: Solve for x
    x = 3,854,873,474.64/70,076.75
  6. Step 6: Final answer
    x = 55,009.31

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1.5x scale

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.