Home / 85,071.78-127,634.49-40,091.32

Finding the Fourth Proportional to 85,071.78, 127,634.49 and 40,091.32

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Solution

The fourth proportional to 85,071.78, 127,634.49 and 40,091.32 is: 60,149.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,071.78 : 127,634.49 = 40,091.32 : x
  2. Step 2: Convert to fraction form
    85,071.78/127,634.49 = 40,091.32/x
  3. Step 3: Cross multiply
    85,071.78x = 127,634.49 × 40,091.32
  4. Step 4: Simplify right side
    85,071.78x = 5,117,035,181.63
  5. Step 5: Solve for x
    x = 5,117,035,181.63/85,071.78
  6. Step 6: Final answer
    x = 60,149.62

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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.