Home / 80,478.06-111,054.55-50,261.60

Finding the Fourth Proportional to 80,478.06, 111,054.55 and 50,261.60

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Solution

The fourth proportional to 80,478.06, 111,054.55 and 50,261.60 is: 69,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,478.06 : 111,054.55 = 50,261.60 : x
  2. Step 2: Convert to fraction form
    80,478.06/111,054.55 = 50,261.60/x
  3. Step 3: Cross multiply
    80,478.06x = 111,054.55 × 50,261.60
  4. Step 4: Simplify right side
    80,478.06x = 5,581,779,370.28
  5. Step 5: Solve for x
    x = 5,581,779,370.28/80,478.06
  6. Step 6: Final answer
    x = 69,357.78

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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.