Home / 80,756.15-121,161.63-35,771.46

Finding the Fourth Proportional to 80,756.15, 121,161.63 and 35,771.46

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Solution

The fourth proportional to 80,756.15, 121,161.63 and 35,771.46 is: 53,669.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,756.15 : 121,161.63 = 35,771.46 : x
  2. Step 2: Convert to fraction form
    80,756.15/121,161.63 = 35,771.46/x
  3. Step 3: Cross multiply
    80,756.15x = 121,161.63 × 35,771.46
  4. Step 4: Simplify right side
    80,756.15x = 4,334,128,222.22
  5. Step 5: Solve for x
    x = 4,334,128,222.22/80,756.15
  6. Step 6: Final answer
    x = 53,669.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.