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Finding the Fourth Proportional to 30,904.90, 43,310.60 and 30,904.90

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Solution

The fourth proportional to 30,904.90, 43,310.60 and 30,904.90 is: 43,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,904.90 : 43,310.60 = 30,904.90 : x
  2. Step 2: Convert to fraction form
    30,904.90/43,310.60 = 30,904.90/x
  3. Step 3: Cross multiply
    30,904.90x = 43,310.60 × 30,904.90
  4. Step 4: Simplify right side
    30,904.90x = 1,338,509,761.94
  5. Step 5: Solve for x
    x = 1,338,509,761.94/30,904.90
  6. Step 6: Final answer
    x = 43,310.60

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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.