Home / 86,780.67-130,181.27-30,609.06

Finding the Fourth Proportional to 86,780.67, 130,181.27 and 30,609.06

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Solution

The fourth proportional to 86,780.67, 130,181.27 and 30,609.06 is: 45,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.67 : 130,181.27 = 30,609.06 : x
  2. Step 2: Convert to fraction form
    86,780.67/130,181.27 = 30,609.06/x
  3. Step 3: Cross multiply
    86,780.67x = 130,181.27 × 30,609.06
  4. Step 4: Simplify right side
    86,780.67x = 3,984,726,151.26
  5. Step 5: Solve for x
    x = 3,984,726,151.26/86,780.67
  6. Step 6: Final answer
    x = 45,917.21

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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.