Home / 86,055.69-129,039-38,629.95

Finding the Fourth Proportional to 86,055.69, 129,039 and 38,629.95

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Solution

The fourth proportional to 86,055.69, 129,039 and 38,629.95 is: 57,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,055.69 : 129,039 = 38,629.95 : x
  2. Step 2: Convert to fraction form
    86,055.69/129,039 = 38,629.95/x
  3. Step 3: Cross multiply
    86,055.69x = 129,039 × 38,629.95
  4. Step 4: Simplify right side
    86,055.69x = 4,984,770,118.05
  5. Step 5: Solve for x
    x = 4,984,770,118.05/86,055.69
  6. Step 6: Final answer
    x = 57,924.93

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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.