Home / 81,279.39-121,970.93-34,532.27

Finding the Fourth Proportional to 81,279.39, 121,970.93 and 34,532.27

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Solution

The fourth proportional to 81,279.39, 121,970.93 and 34,532.27 is: 51,820.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.39 : 121,970.93 = 34,532.27 : x
  2. Step 2: Convert to fraction form
    81,279.39/121,970.93 = 34,532.27/x
  3. Step 3: Cross multiply
    81,279.39x = 121,970.93 × 34,532.27
  4. Step 4: Simplify right side
    81,279.39x = 4,211,932,304.40
  5. Step 5: Solve for x
    x = 4,211,932,304.40/81,279.39
  6. Step 6: Final answer
    x = 51,820.42

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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.