Home / 86,120.56-118,857.30-48,394.78

Finding the Fourth Proportional to 86,120.56, 118,857.30 and 48,394.78

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Solution

The fourth proportional to 86,120.56, 118,857.30 and 48,394.78 is: 66,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.56 : 118,857.30 = 48,394.78 : x
  2. Step 2: Convert to fraction form
    86,120.56/118,857.30 = 48,394.78/x
  3. Step 3: Cross multiply
    86,120.56x = 118,857.30 × 48,394.78
  4. Step 4: Simplify right side
    86,120.56x = 5,752,072,884.89
  5. Step 5: Solve for x
    x = 5,752,072,884.89/86,120.56
  6. Step 6: Final answer
    x = 66,790.94

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1.5x scale

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.