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Finding the Fourth Proportional to 45,806.80, 68,710.20 and 19,512.40

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Solution

The fourth proportional to 45,806.80, 68,710.20 and 19,512.40 is: 29,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,806.80 : 68,710.20 = 19,512.40 : x
  2. Step 2: Convert to fraction form
    45,806.80/68,710.20 = 19,512.40/x
  3. Step 3: Cross multiply
    45,806.80x = 68,710.20 × 19,512.40
  4. Step 4: Simplify right side
    45,806.80x = 1,340,700,906.48
  5. Step 5: Solve for x
    x = 1,340,700,906.48/45,806.80
  6. Step 6: Final answer
    x = 29,268.60

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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.