Home / 89,009.99-122,778.47-55,028.87

Finding the Fourth Proportional to 89,009.99, 122,778.47 and 55,028.87

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Solution

The fourth proportional to 89,009.99, 122,778.47 and 55,028.87 is: 75,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,009.99 : 122,778.47 = 55,028.87 : x
  2. Step 2: Convert to fraction form
    89,009.99/122,778.47 = 55,028.87/x
  3. Step 3: Cross multiply
    89,009.99x = 122,778.47 × 55,028.87
  4. Step 4: Simplify right side
    89,009.99x = 6,756,360,464.43
  5. Step 5: Solve for x
    x = 6,756,360,464.43/89,009.99
  6. Step 6: Final answer
    x = 75,905.64

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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.