Home / 86,231.45-129,305.49-30,070.22

Finding the Fourth Proportional to 86,231.45, 129,305.49 and 30,070.22

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Solution

The fourth proportional to 86,231.45, 129,305.49 and 30,070.22 is: 45,090.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,231.45 : 129,305.49 = 30,070.22 : x
  2. Step 2: Convert to fraction form
    86,231.45/129,305.49 = 30,070.22/x
  3. Step 3: Cross multiply
    86,231.45x = 129,305.49 × 30,070.22
  4. Step 4: Simplify right side
    86,231.45x = 3,888,244,531.51
  5. Step 5: Solve for x
    x = 3,888,244,531.51/86,231.45
  6. Step 6: Final answer
    x = 45,090.79

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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.