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Finding the Fourth Proportional to 70,880.44, 106,295.70 and 20,947.24

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Solution

The fourth proportional to 70,880.44, 106,295.70 and 20,947.24 is: 31,413.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.44 : 106,295.70 = 20,947.24 : x
  2. Step 2: Convert to fraction form
    70,880.44/106,295.70 = 20,947.24/x
  3. Step 3: Cross multiply
    70,880.44x = 106,295.70 × 20,947.24
  4. Step 4: Simplify right side
    70,880.44x = 2,226,601,538.87
  5. Step 5: Solve for x
    x = 2,226,601,538.87/70,880.44
  6. Step 6: Final answer
    x = 31,413.48

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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.