Home / 86,782.45-130,185.31-30,609.35

Finding the Fourth Proportional to 86,782.45, 130,185.31 and 30,609.35

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Solution

The fourth proportional to 86,782.45, 130,185.31 and 30,609.35 is: 45,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,782.45 : 130,185.31 = 30,609.35 : x
  2. Step 2: Convert to fraction form
    86,782.45/130,185.31 = 30,609.35/x
  3. Step 3: Cross multiply
    86,782.45x = 130,185.31 × 30,609.35
  4. Step 4: Simplify right side
    86,782.45x = 3,984,887,718.65
  5. Step 5: Solve for x
    x = 3,984,887,718.65/86,782.45
  6. Step 6: Final answer
    x = 45,918.13

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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.