Home / 86,354.24-129,450.24-30,159.68

Finding the Fourth Proportional to 86,354.24, 129,450.24 and 30,159.68

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Solution

The fourth proportional to 86,354.24, 129,450.24 and 30,159.68 is: 45,211.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,354.24 : 129,450.24 = 30,159.68 : x
  2. Step 2: Convert to fraction form
    86,354.24/129,450.24 = 30,159.68/x
  3. Step 3: Cross multiply
    86,354.24x = 129,450.24 × 30,159.68
  4. Step 4: Simplify right side
    86,354.24x = 3,904,177,814.32
  5. Step 5: Solve for x
    x = 3,904,177,814.32/86,354.24
  6. Step 6: Final answer
    x = 45,211.19

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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.