Home / 40,980.85-61,450.13-18,775.20

Finding the Fourth Proportional to 40,980.85, 61,450.13 and 18,775.20

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Solution

The fourth proportional to 40,980.85, 61,450.13 and 18,775.20 is: 28,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,980.85 : 61,450.13 = 18,775.20 : x
  2. Step 2: Convert to fraction form
    40,980.85/61,450.13 = 18,775.20/x
  3. Step 3: Cross multiply
    40,980.85x = 61,450.13 × 18,775.20
  4. Step 4: Simplify right side
    40,980.85x = 1,153,738,480.78
  5. Step 5: Solve for x
    x = 1,153,738,480.78/40,980.85
  6. Step 6: Final answer
    x = 28,153.11

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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.