Home / 40,219.90-55,442.04-31,706.80

Finding the Fourth Proportional to 40,219.90, 55,442.04 and 31,706.80

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Solution

The fourth proportional to 40,219.90, 55,442.04 and 31,706.80 is: 43,706.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,219.90 : 55,442.04 = 31,706.80 : x
  2. Step 2: Convert to fraction form
    40,219.90/55,442.04 = 31,706.80/x
  3. Step 3: Cross multiply
    40,219.90x = 55,442.04 × 31,706.80
  4. Step 4: Simplify right side
    40,219.90x = 1,757,889,673.87
  5. Step 5: Solve for x
    x = 1,757,889,673.87/40,219.90
  6. Step 6: Final answer
    x = 43,706.96

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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.