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Finding the Fourth Proportional to 51,235.25, 70,705.19 and 28,879.25

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Solution

The fourth proportional to 51,235.25, 70,705.19 and 28,879.25 is: 39,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,235.25 : 70,705.19 = 28,879.25 : x
  2. Step 2: Convert to fraction form
    51,235.25/70,705.19 = 28,879.25/x
  3. Step 3: Cross multiply
    51,235.25x = 70,705.19 × 28,879.25
  4. Step 4: Simplify right side
    51,235.25x = 2,041,912,858.31
  5. Step 5: Solve for x
    x = 2,041,912,858.31/51,235.25
  6. Step 6: Final answer
    x = 39,853.67

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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.