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Finding the Fourth Proportional to 51,292.70, 70,795.73 and 30,078.80

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Solution

The fourth proportional to 51,292.70, 70,795.73 and 30,078.80 is: 41,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,292.70 : 70,795.73 = 30,078.80 : x
  2. Step 2: Convert to fraction form
    51,292.70/70,795.73 = 30,078.80/x
  3. Step 3: Cross multiply
    51,292.70x = 70,795.73 × 30,078.80
  4. Step 4: Simplify right side
    51,292.70x = 2,129,450,590.23
  5. Step 5: Solve for x
    x = 2,129,450,590.23/51,292.70
  6. Step 6: Final answer
    x = 41,515.67

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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.