Home / 49,991.10-68,989.80-28,770.42

Finding the Fourth Proportional to 49,991.10, 68,989.80 and 28,770.42

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Solution

The fourth proportional to 49,991.10, 68,989.80 and 28,770.42 is: 39,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,991.10 : 68,989.80 = 28,770.42 : x
  2. Step 2: Convert to fraction form
    49,991.10/68,989.80 = 28,770.42/x
  3. Step 3: Cross multiply
    49,991.10x = 68,989.80 × 28,770.42
  4. Step 4: Simplify right side
    49,991.10x = 1,984,865,521.72
  5. Step 5: Solve for x
    x = 1,984,865,521.72/49,991.10
  6. Step 6: Final answer
    x = 39,704.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.