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Finding the Fourth Proportional to 45,878.88, 68,818.16 and 30,292.80

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Solution

The fourth proportional to 45,878.88, 68,818.16 and 30,292.80 is: 45,439.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,878.88 : 68,818.16 = 30,292.80 : x
  2. Step 2: Convert to fraction form
    45,878.88/68,818.16 = 30,292.80/x
  3. Step 3: Cross multiply
    45,878.88x = 68,818.16 × 30,292.80
  4. Step 4: Simplify right side
    45,878.88x = 2,084,694,757.25
  5. Step 5: Solve for x
    x = 2,084,694,757.25/45,878.88
  6. Step 6: Final answer
    x = 45,439.09

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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.