Home / 86,319.60-129,285-44,212.56

Finding the Fourth Proportional to 86,319.60, 129,285 and 44,212.56

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Solution

The fourth proportional to 86,319.60, 129,285 and 44,212.56 is: 66,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,319.60 : 129,285 = 44,212.56 : x
  2. Step 2: Convert to fraction form
    86,319.60/129,285 = 44,212.56/x
  3. Step 3: Cross multiply
    86,319.60x = 129,285 × 44,212.56
  4. Step 4: Simplify right side
    86,319.60x = 5,716,020,819.60
  5. Step 5: Solve for x
    x = 5,716,020,819.60/86,319.60
  6. Step 6: Final answer
    x = 66,219.27

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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.