Home / 81,280,181.89-112,137,694.54-48,215,103.85

Finding the Fourth Proportional to 81,280,181.89, 112,137,694.54 and 48,215,103.85

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Solution

The fourth proportional to 81,280,181.89, 112,137,694.54 and 48,215,103.85 is: 66,519,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280,181.89 : 112,137,694.54 = 48,215,103.85 : x
  2. Step 2: Convert to fraction form
    81,280,181.89/112,137,694.54 = 48,215,103.85/x
  3. Step 3: Cross multiply
    81,280,181.89x = 112,137,694.54 × 48,215,103.85
  4. Step 4: Simplify right side
    81,280,181.89x = 5,406,730,587,745,678
  5. Step 5: Solve for x
    x = 5,406,730,587,745,678/81,280,181.89
  6. Step 6: Final answer
    x = 66,519,666.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.