Home / 86,653.32-129,987.26-30,487.51

Finding the Fourth Proportional to 86,653.32, 129,987.26 and 30,487.51

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Solution

The fourth proportional to 86,653.32, 129,987.26 and 30,487.51 is: 45,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,653.32 : 129,987.26 = 30,487.51 : x
  2. Step 2: Convert to fraction form
    86,653.32/129,987.26 = 30,487.51/x
  3. Step 3: Cross multiply
    86,653.32x = 129,987.26 × 30,487.51
  4. Step 4: Simplify right side
    86,653.32x = 3,962,987,889.12
  5. Step 5: Solve for x
    x = 3,962,987,889.12/86,653.32
  6. Step 6: Final answer
    x = 45,733.83

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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.