Home / 86,546.10-129,819.15-39,890.10

Finding the Fourth Proportional to 86,546.10, 129,819.15 and 39,890.10

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Solution

The fourth proportional to 86,546.10, 129,819.15 and 39,890.10 is: 59,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,546.10 : 129,819.15 = 39,890.10 : x
  2. Step 2: Convert to fraction form
    86,546.10/129,819.15 = 39,890.10/x
  3. Step 3: Cross multiply
    86,546.10x = 129,819.15 × 39,890.10
  4. Step 4: Simplify right side
    86,546.10x = 5,178,498,875.42
  5. Step 5: Solve for x
    x = 5,178,498,875.42/86,546.10
  6. Step 6: Final answer
    x = 59,835.15

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Similar ratio
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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.