Home / 86,918.40-130,345.20-30,736.80

Finding the Fourth Proportional to 86,918.40, 130,345.20 and 30,736.80

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Solution

The fourth proportional to 86,918.40, 130,345.20 and 30,736.80 is: 46,093.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,918.40 : 130,345.20 = 30,736.80 : x
  2. Step 2: Convert to fraction form
    86,918.40/130,345.20 = 30,736.80/x
  3. Step 3: Cross multiply
    86,918.40x = 130,345.20 × 30,736.80
  4. Step 4: Simplify right side
    86,918.40x = 4,006,394,343.36
  5. Step 5: Solve for x
    x = 4,006,394,343.36/86,918.40
  6. Step 6: Final answer
    x = 46,093.74

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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.