Home / 80,021.10-120,106.96-40,606.50

Finding the Fourth Proportional to 80,021.10, 120,106.96 and 40,606.50

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Solution

The fourth proportional to 80,021.10, 120,106.96 and 40,606.50 is: 60,947.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.10 : 120,106.96 = 40,606.50 : x
  2. Step 2: Convert to fraction form
    80,021.10/120,106.96 = 40,606.50/x
  3. Step 3: Cross multiply
    80,021.10x = 120,106.96 × 40,606.50
  4. Step 4: Simplify right side
    80,021.10x = 4,877,123,271.24
  5. Step 5: Solve for x
    x = 4,877,123,271.24/80,021.10
  6. Step 6: Final answer
    x = 60,947.97

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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.