Home / 86,779.35-130,189.79-30,632.06

Finding the Fourth Proportional to 86,779.35, 130,189.79 and 30,632.06

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Solution

The fourth proportional to 86,779.35, 130,189.79 and 30,632.06 is: 45,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,779.35 : 130,189.79 = 30,632.06 : x
  2. Step 2: Convert to fraction form
    86,779.35/130,189.79 = 30,632.06/x
  3. Step 3: Cross multiply
    86,779.35x = 130,189.79 × 30,632.06
  4. Step 4: Simplify right side
    86,779.35x = 3,987,981,458.67
  5. Step 5: Solve for x
    x = 3,987,981,458.67/86,779.35
  6. Step 6: Final answer
    x = 45,955.42

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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.