Home / 78,359.22-108,053.04-55,674.60

Finding the Fourth Proportional to 78,359.22, 108,053.04 and 55,674.60

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Solution

The fourth proportional to 78,359.22, 108,053.04 and 55,674.60 is: 76,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.22 : 108,053.04 = 55,674.60 : x
  2. Step 2: Convert to fraction form
    78,359.22/108,053.04 = 55,674.60/x
  3. Step 3: Cross multiply
    78,359.22x = 108,053.04 × 55,674.60
  4. Step 4: Simplify right side
    78,359.22x = 6,015,809,780.78
  5. Step 5: Solve for x
    x = 6,015,809,780.78/78,359.22
  6. Step 6: Final answer
    x = 76,772.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.