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Finding the Fourth Proportional to 70,817.44, 97,724.44 and 38,980.20

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Solution

The fourth proportional to 70,817.44, 97,724.44 and 38,980.20 is: 53,790.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,817.44 : 97,724.44 = 38,980.20 : x
  2. Step 2: Convert to fraction form
    70,817.44/97,724.44 = 38,980.20/x
  3. Step 3: Cross multiply
    70,817.44x = 97,724.44 × 38,980.20
  4. Step 4: Simplify right side
    70,817.44x = 3,809,318,216.09
  5. Step 5: Solve for x
    x = 3,809,318,216.09/70,817.44
  6. Step 6: Final answer
    x = 53,790.68

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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.