Home / 86,805.20-119,790.60-49,079.60

Finding the Fourth Proportional to 86,805.20, 119,790.60 and 49,079.60

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Solution

The fourth proportional to 86,805.20, 119,790.60 and 49,079.60 is: 67,729.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.20 : 119,790.60 = 49,079.60 : x
  2. Step 2: Convert to fraction form
    86,805.20/119,790.60 = 49,079.60/x
  3. Step 3: Cross multiply
    86,805.20x = 119,790.60 × 49,079.60
  4. Step 4: Simplify right side
    86,805.20x = 5,879,274,731.76
  5. Step 5: Solve for x
    x = 5,879,274,731.76/86,805.20
  6. Step 6: Final answer
    x = 67,729.52

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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.