Home / 55,197.87-76,161.20-31,322.67

Finding the Fourth Proportional to 55,197.87, 76,161.20 and 31,322.67

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Solution

The fourth proportional to 55,197.87, 76,161.20 and 31,322.67 is: 43,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,197.87 : 76,161.20 = 31,322.67 : x
  2. Step 2: Convert to fraction form
    55,197.87/76,161.20 = 31,322.67/x
  3. Step 3: Cross multiply
    55,197.87x = 76,161.20 × 31,322.67
  4. Step 4: Simplify right side
    55,197.87x = 2,385,571,977.79
  5. Step 5: Solve for x
    x = 2,385,571,977.79/55,197.87
  6. Step 6: Final answer
    x = 43,218.55

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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.