Home / 86,524.80-129,631.22-81,313.96

Finding the Fourth Proportional to 86,524.80, 129,631.22 and 81,313.96

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Solution

The fourth proportional to 86,524.80, 129,631.22 and 81,313.96 is: 121,824.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,524.80 : 129,631.22 = 81,313.96 : x
  2. Step 2: Convert to fraction form
    86,524.80/129,631.22 = 81,313.96/x
  3. Step 3: Cross multiply
    86,524.80x = 129,631.22 × 81,313.96
  4. Step 4: Simplify right side
    86,524.80x = 10,540,827,837.83
  5. Step 5: Solve for x
    x = 10,540,827,837.83/86,524.80
  6. Step 6: Final answer
    x = 121,824.35

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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.