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Finding the Fourth Proportional to 30,846.20, 43,315.90 and 30,846.20

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Solution

The fourth proportional to 30,846.20, 43,315.90 and 30,846.20 is: 43,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,846.20 : 43,315.90 = 30,846.20 : x
  2. Step 2: Convert to fraction form
    30,846.20/43,315.90 = 30,846.20/x
  3. Step 3: Cross multiply
    30,846.20x = 43,315.90 × 30,846.20
  4. Step 4: Simplify right side
    30,846.20x = 1,336,130,914.58
  5. Step 5: Solve for x
    x = 1,336,130,914.58/30,846.20
  6. Step 6: Final answer
    x = 43,315.90

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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.