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Finding the Fourth Proportional to 45,203.80, 67,806.08 and 11,928.60

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Solution

The fourth proportional to 45,203.80, 67,806.08 and 11,928.60 is: 17,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,203.80 : 67,806.08 = 11,928.60 : x
  2. Step 2: Convert to fraction form
    45,203.80/67,806.08 = 11,928.60/x
  3. Step 3: Cross multiply
    45,203.80x = 67,806.08 × 11,928.60
  4. Step 4: Simplify right side
    45,203.80x = 808,831,605.89
  5. Step 5: Solve for x
    x = 808,831,605.89/45,203.80
  6. Step 6: Final answer
    x = 17,893.00

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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.