Home / 86,318.67-129,453.89-54,681.69

Finding the Fourth Proportional to 86,318.67, 129,453.89 and 54,681.69

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Solution

The fourth proportional to 86,318.67, 129,453.89 and 54,681.69 is: 82,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,318.67 : 129,453.89 = 54,681.69 : x
  2. Step 2: Convert to fraction form
    86,318.67/129,453.89 = 54,681.69/x
  3. Step 3: Cross multiply
    86,318.67x = 129,453.89 × 54,681.69
  4. Step 4: Simplify right side
    86,318.67x = 7,078,757,208.87
  5. Step 5: Solve for x
    x = 7,078,757,208.87/86,318.67
  6. Step 6: Final answer
    x = 82,007.26

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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.