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Finding the Fourth Proportional to 30,334.80, 42,556.20 and 30,334.80

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Solution

The fourth proportional to 30,334.80, 42,556.20 and 30,334.80 is: 42,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,334.80 : 42,556.20 = 30,334.80 : x
  2. Step 2: Convert to fraction form
    30,334.80/42,556.20 = 30,334.80/x
  3. Step 3: Cross multiply
    30,334.80x = 42,556.20 × 30,334.80
  4. Step 4: Simplify right side
    30,334.80x = 1,290,933,815.76
  5. Step 5: Solve for x
    x = 1,290,933,815.76/30,334.80
  6. Step 6: Final answer
    x = 42,556.20

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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.