Home / 85,685.22-128,550.01-50,176.55

Finding the Fourth Proportional to 85,685.22, 128,550.01 and 50,176.55

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Solution

The fourth proportional to 85,685.22, 128,550.01 and 50,176.55 is: 75,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,685.22 : 128,550.01 = 50,176.55 : x
  2. Step 2: Convert to fraction form
    85,685.22/128,550.01 = 50,176.55/x
  3. Step 3: Cross multiply
    85,685.22x = 128,550.01 × 50,176.55
  4. Step 4: Simplify right side
    85,685.22x = 6,450,195,236.07
  5. Step 5: Solve for x
    x = 6,450,195,236.07/85,685.22
  6. Step 6: Final answer
    x = 75,277.80

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1.5x scale

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.