Home / 81,751.39-112,817.66-49,486.75

Finding the Fourth Proportional to 81,751.39, 112,817.66 and 49,486.75

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Solution

The fourth proportional to 81,751.39, 112,817.66 and 49,486.75 is: 68,292.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.39 : 112,817.66 = 49,486.75 : x
  2. Step 2: Convert to fraction form
    81,751.39/112,817.66 = 49,486.75/x
  3. Step 3: Cross multiply
    81,751.39x = 112,817.66 × 49,486.75
  4. Step 4: Simplify right side
    81,751.39x = 5,582,979,336.01
  5. Step 5: Solve for x
    x = 5,582,979,336.01/81,751.39
  6. Step 6: Final answer
    x = 68,292.16

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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.