Home / 86,781.67-130,182.77-30,610.06

Finding the Fourth Proportional to 86,781.67, 130,182.77 and 30,610.06

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Solution

The fourth proportional to 86,781.67, 130,182.77 and 30,610.06 is: 45,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,781.67 : 130,182.77 = 30,610.06 : x
  2. Step 2: Convert to fraction form
    86,781.67/130,182.77 = 30,610.06/x
  3. Step 3: Cross multiply
    86,781.67x = 130,182.77 × 30,610.06
  4. Step 4: Simplify right side
    86,781.67x = 3,984,902,400.67
  5. Step 5: Solve for x
    x = 3,984,902,400.67/86,781.67
  6. Step 6: Final answer
    x = 45,918.71

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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.