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Finding the Fourth Proportional to 40,904.80, 61,355.04 and 11,323.60

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Solution

The fourth proportional to 40,904.80, 61,355.04 and 11,323.60 is: 16,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,904.80 : 61,355.04 = 11,323.60 : x
  2. Step 2: Convert to fraction form
    40,904.80/61,355.04 = 11,323.60/x
  3. Step 3: Cross multiply
    40,904.80x = 61,355.04 × 11,323.60
  4. Step 4: Simplify right side
    40,904.80x = 694,759,930.94
  5. Step 5: Solve for x
    x = 694,759,930.94/40,904.80
  6. Step 6: Final answer
    x = 16,984.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.