Home / 81,972.39-122,975.37-34,587.50

Finding the Fourth Proportional to 81,972.39, 122,975.37 and 34,587.50

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Solution

The fourth proportional to 81,972.39, 122,975.37 and 34,587.50 is: 51,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.39 : 122,975.37 = 34,587.50 : x
  2. Step 2: Convert to fraction form
    81,972.39/122,975.37 = 34,587.50/x
  3. Step 3: Cross multiply
    81,972.39x = 122,975.37 × 34,587.50
  4. Step 4: Simplify right side
    81,972.39x = 4,253,409,995.00
  5. Step 5: Solve for x
    x = 4,253,409,995.00/81,972.39
  6. Step 6: Final answer
    x = 51,888.32

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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.