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Finding the Fourth Proportional to 70,420.77, 105,560.08 and 44,143.97

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Solution

The fourth proportional to 70,420.77, 105,560.08 and 44,143.97 is: 66,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,420.77 : 105,560.08 = 44,143.97 : x
  2. Step 2: Convert to fraction form
    70,420.77/105,560.08 = 44,143.97/x
  3. Step 3: Cross multiply
    70,420.77x = 105,560.08 × 44,143.97
  4. Step 4: Simplify right side
    70,420.77x = 4,659,840,366.56
  5. Step 5: Solve for x
    x = 4,659,840,366.56/70,420.77
  6. Step 6: Final answer
    x = 66,171.39

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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.