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Finding the Fourth Proportional to 30,868.20, 43,346.70 and 30,868.20

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Solution

The fourth proportional to 30,868.20, 43,346.70 and 30,868.20 is: 43,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.20 : 43,346.70 = 30,868.20 : x
  2. Step 2: Convert to fraction form
    30,868.20/43,346.70 = 30,868.20/x
  3. Step 3: Cross multiply
    30,868.20x = 43,346.70 × 30,868.20
  4. Step 4: Simplify right side
    30,868.20x = 1,338,034,604.94
  5. Step 5: Solve for x
    x = 1,338,034,604.94/30,868.20
  6. Step 6: Final answer
    x = 43,346.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.