Home / 85,504.93-128,259.60-40,515.73

Finding the Fourth Proportional to 85,504.93, 128,259.60 and 40,515.73

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Solution

The fourth proportional to 85,504.93, 128,259.60 and 40,515.73 is: 60,774.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,504.93 : 128,259.60 = 40,515.73 : x
  2. Step 2: Convert to fraction form
    85,504.93/128,259.60 = 40,515.73/x
  3. Step 3: Cross multiply
    85,504.93x = 128,259.60 × 40,515.73
  4. Step 4: Simplify right side
    85,504.93x = 5,196,531,323.51
  5. Step 5: Solve for x
    x = 5,196,531,323.51/85,504.93
  6. Step 6: Final answer
    x = 60,774.64

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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.