Home / 80,335.10-120,576.64-40,920.50

Finding the Fourth Proportional to 80,335.10, 120,576.64 and 40,920.50

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Solution

The fourth proportional to 80,335.10, 120,576.64 and 40,920.50 is: 61,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,335.10 : 120,576.64 = 40,920.50 : x
  2. Step 2: Convert to fraction form
    80,335.10/120,576.64 = 40,920.50/x
  3. Step 3: Cross multiply
    80,335.10x = 120,576.64 × 40,920.50
  4. Step 4: Simplify right side
    80,335.10x = 4,934,056,397.12
  5. Step 5: Solve for x
    x = 4,934,056,397.12/80,335.10
  6. Step 6: Final answer
    x = 61,418.44

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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.