Home / 80,020.68-120,106.32-40,606.08

Finding the Fourth Proportional to 80,020.68, 120,106.32 and 40,606.08

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Solution

The fourth proportional to 80,020.68, 120,106.32 and 40,606.08 is: 60,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,020.68 : 120,106.32 = 40,606.08 : x
  2. Step 2: Convert to fraction form
    80,020.68/120,106.32 = 40,606.08/x
  3. Step 3: Cross multiply
    80,020.68x = 120,106.32 × 40,606.08
  4. Step 4: Simplify right side
    80,020.68x = 4,877,046,838.43
  5. Step 5: Solve for x
    x = 4,877,046,838.43/80,020.68
  6. Step 6: Final answer
    x = 60,947.33

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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.