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Finding the Fourth Proportional to 70,324.60, 105,487.34 and 28,771.60

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Solution

The fourth proportional to 70,324.60, 105,487.34 and 28,771.60 is: 43,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,324.60 : 105,487.34 = 28,771.60 : x
  2. Step 2: Convert to fraction form
    70,324.60/105,487.34 = 28,771.60/x
  3. Step 3: Cross multiply
    70,324.60x = 105,487.34 × 28,771.60
  4. Step 4: Simplify right side
    70,324.60x = 3,035,039,551.54
  5. Step 5: Solve for x
    x = 3,035,039,551.54/70,324.60
  6. Step 6: Final answer
    x = 43,157.58

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1.5x scale

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.