Home / 86,370.21-129,572.73-36,450.36

Finding the Fourth Proportional to 86,370.21, 129,572.73 and 36,450.36

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Solution

The fourth proportional to 86,370.21, 129,572.73 and 36,450.36 is: 54,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,370.21 : 129,572.73 = 36,450.36 : x
  2. Step 2: Convert to fraction form
    86,370.21/129,572.73 = 36,450.36/x
  3. Step 3: Cross multiply
    86,370.21x = 129,572.73 × 36,450.36
  4. Step 4: Simplify right side
    86,370.21x = 4,722,972,654.68
  5. Step 5: Solve for x
    x = 4,722,972,654.68/86,370.21
  6. Step 6: Final answer
    x = 54,682.89

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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.