Home / 86,076.90-129,110.34-38,679.75

Finding the Fourth Proportional to 86,076.90, 129,110.34 and 38,679.75

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Solution

The fourth proportional to 86,076.90, 129,110.34 and 38,679.75 is: 58,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,076.90 : 129,110.34 = 38,679.75 : x
  2. Step 2: Convert to fraction form
    86,076.90/129,110.34 = 38,679.75/x
  3. Step 3: Cross multiply
    86,076.90x = 129,110.34 × 38,679.75
  4. Step 4: Simplify right side
    86,076.90x = 4,993,955,673.62
  5. Step 5: Solve for x
    x = 4,993,955,673.62/86,076.90
  6. Step 6: Final answer
    x = 58,017.37

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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.