Home / 86,584.09-129,787.97-55,017.48

Finding the Fourth Proportional to 86,584.09, 129,787.97 and 55,017.48

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Solution

The fourth proportional to 86,584.09, 129,787.97 and 55,017.48 is: 82,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,584.09 : 129,787.97 = 55,017.48 : x
  2. Step 2: Convert to fraction form
    86,584.09/129,787.97 = 55,017.48/x
  3. Step 3: Cross multiply
    86,584.09x = 129,787.97 × 55,017.48
  4. Step 4: Simplify right side
    86,584.09x = 7,140,607,043.72
  5. Step 5: Solve for x
    x = 7,140,607,043.72/86,584.09
  6. Step 6: Final answer
    x = 82,470.20

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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.