Home / 86,825.38-130,069.54-63,987.76

Finding the Fourth Proportional to 86,825.38, 130,069.54 and 63,987.76

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Solution

The fourth proportional to 86,825.38, 130,069.54 and 63,987.76 is: 95,857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,825.38 : 130,069.54 = 63,987.76 : x
  2. Step 2: Convert to fraction form
    86,825.38/130,069.54 = 63,987.76/x
  3. Step 3: Cross multiply
    86,825.38x = 130,069.54 × 63,987.76
  4. Step 4: Simplify right side
    86,825.38x = 8,322,858,508.83
  5. Step 5: Solve for x
    x = 8,322,858,508.83/86,825.38
  6. Step 6: Final answer
    x = 95,857.44

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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.