Home / 86,582.85-129,881.67-30,418.08

Finding the Fourth Proportional to 86,582.85, 129,881.67 and 30,418.08

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Solution

The fourth proportional to 86,582.85, 129,881.67 and 30,418.08 is: 45,629.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,582.85 : 129,881.67 = 30,418.08 : x
  2. Step 2: Convert to fraction form
    86,582.85/129,881.67 = 30,418.08/x
  3. Step 3: Cross multiply
    86,582.85x = 129,881.67 × 30,418.08
  4. Step 4: Simplify right side
    86,582.85x = 3,950,751,028.59
  5. Step 5: Solve for x
    x = 3,950,751,028.59/86,582.85
  6. Step 6: Final answer
    x = 45,629.72

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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.