Home / 86,609.20-129,816.60-36,680.80

Finding the Fourth Proportional to 86,609.20, 129,816.60 and 36,680.80

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Solution

The fourth proportional to 86,609.20, 129,816.60 and 36,680.80 is: 54,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,609.20 : 129,816.60 = 36,680.80 : x
  2. Step 2: Convert to fraction form
    86,609.20/129,816.60 = 36,680.80/x
  3. Step 3: Cross multiply
    86,609.20x = 129,816.60 × 36,680.80
  4. Step 4: Simplify right side
    86,609.20x = 4,761,776,741.28
  5. Step 5: Solve for x
    x = 4,761,776,741.28/86,609.20
  6. Step 6: Final answer
    x = 54,980.03

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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.