Home / 80,653.34-120,977.28-30,731.65

Finding the Fourth Proportional to 80,653.34, 120,977.28 and 30,731.65

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Solution

The fourth proportional to 80,653.34, 120,977.28 and 30,731.65 is: 46,096.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,653.34 : 120,977.28 = 30,731.65 : x
  2. Step 2: Convert to fraction form
    80,653.34/120,977.28 = 30,731.65/x
  3. Step 3: Cross multiply
    80,653.34x = 120,977.28 × 30,731.65
  4. Step 4: Simplify right side
    80,653.34x = 3,717,831,124.47
  5. Step 5: Solve for x
    x = 3,717,831,124.47/80,653.34
  6. Step 6: Final answer
    x = 46,096.43

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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.