Home / 85,684.45-128,548.85-50,175.77

Finding the Fourth Proportional to 85,684.45, 128,548.85 and 50,175.77

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Solution

The fourth proportional to 85,684.45, 128,548.85 and 50,175.77 is: 75,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,684.45 : 128,548.85 = 50,175.77 : x
  2. Step 2: Convert to fraction form
    85,684.45/128,548.85 = 50,175.77/x
  3. Step 3: Cross multiply
    85,684.45x = 128,548.85 × 50,175.77
  4. Step 4: Simplify right side
    85,684.45x = 6,450,037,119.80
  5. Step 5: Solve for x
    x = 6,450,037,119.80/85,684.45
  6. Step 6: Final answer
    x = 75,276.64

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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.