Home / 81,278.19-112,181.46-49,457.34

Finding the Fourth Proportional to 81,278.19, 112,181.46 and 49,457.34

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Solution

The fourth proportional to 81,278.19, 112,181.46 and 49,457.34 is: 68,261.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,278.19 : 112,181.46 = 49,457.34 : x
  2. Step 2: Convert to fraction form
    81,278.19/112,181.46 = 49,457.34/x
  3. Step 3: Cross multiply
    81,278.19x = 112,181.46 × 49,457.34
  4. Step 4: Simplify right side
    81,278.19x = 5,548,196,608.92
  5. Step 5: Solve for x
    x = 5,548,196,608.92/81,278.19
  6. Step 6: Final answer
    x = 68,261.81

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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.