Home / 86,989.42-120,043.33-51,181.71

Finding the Fourth Proportional to 86,989.42, 120,043.33 and 51,181.71

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Solution

The fourth proportional to 86,989.42, 120,043.33 and 51,181.71 is: 70,629.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,989.42 : 120,043.33 = 51,181.71 : x
  2. Step 2: Convert to fraction form
    86,989.42/120,043.33 = 51,181.71/x
  3. Step 3: Cross multiply
    86,989.42x = 120,043.33 × 51,181.71
  4. Step 4: Simplify right side
    86,989.42x = 6,144,022,903.49
  5. Step 5: Solve for x
    x = 6,144,022,903.49/86,989.42
  6. Step 6: Final answer
    x = 70,629.54

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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.