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Finding the Fourth Proportional to 30,604.20, 42,904.20 and 30,604.20

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Solution

The fourth proportional to 30,604.20, 42,904.20 and 30,604.20 is: 42,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,604.20 : 42,904.20 = 30,604.20 : x
  2. Step 2: Convert to fraction form
    30,604.20/42,904.20 = 30,604.20/x
  3. Step 3: Cross multiply
    30,604.20x = 42,904.20 × 30,604.20
  4. Step 4: Simplify right side
    30,604.20x = 1,313,048,717.64
  5. Step 5: Solve for x
    x = 1,313,048,717.64/30,604.20
  6. Step 6: Final answer
    x = 42,904.20

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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.