Home / 78,084.09-117,132.95-21,924.70

Finding the Fourth Proportional to 78,084.09, 117,132.95 and 21,924.70

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Solution

The fourth proportional to 78,084.09, 117,132.95 and 21,924.70 is: 32,888.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,084.09 : 117,132.95 = 21,924.70 : x
  2. Step 2: Convert to fraction form
    78,084.09/117,132.95 = 21,924.70/x
  3. Step 3: Cross multiply
    78,084.09x = 117,132.95 × 21,924.70
  4. Step 4: Simplify right side
    78,084.09x = 2,568,104,550.84
  5. Step 5: Solve for x
    x = 2,568,104,550.84/78,084.09
  6. Step 6: Final answer
    x = 32,888.96

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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.