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Finding the Fourth Proportional to 45,855.80, 68,718.90 and 28,273.40

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Solution

The fourth proportional to 45,855.80, 68,718.90 and 28,273.40 is: 42,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,855.80 : 68,718.90 = 28,273.40 : x
  2. Step 2: Convert to fraction form
    45,855.80/68,718.90 = 28,273.40/x
  3. Step 3: Cross multiply
    45,855.80x = 68,718.90 × 28,273.40
  4. Step 4: Simplify right side
    45,855.80x = 1,942,916,947.26
  5. Step 5: Solve for x
    x = 1,942,916,947.26/45,855.80
  6. Step 6: Final answer
    x = 42,370.15

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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.