Home / 85,973.39-128,918.58-36,040.07

Finding the Fourth Proportional to 85,973.39, 128,918.58 and 36,040.07

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Solution

The fourth proportional to 85,973.39, 128,918.58 and 36,040.07 is: 54,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,973.39 : 128,918.58 = 36,040.07 : x
  2. Step 2: Convert to fraction form
    85,973.39/128,918.58 = 36,040.07/x
  3. Step 3: Cross multiply
    85,973.39x = 128,918.58 × 36,040.07
  4. Step 4: Simplify right side
    85,973.39x = 4,646,234,647.50
  5. Step 5: Solve for x
    x = 4,646,234,647.50/85,973.39
  6. Step 6: Final answer
    x = 54,042.71

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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.