Home / 76,120.76-114,172.94-19,966.50

Finding the Fourth Proportional to 76,120.76, 114,172.94 and 19,966.50

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Solution

The fourth proportional to 76,120.76, 114,172.94 and 19,966.50 is: 29,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,120.76 : 114,172.94 = 19,966.50 : x
  2. Step 2: Convert to fraction form
    76,120.76/114,172.94 = 19,966.50/x
  3. Step 3: Cross multiply
    76,120.76x = 114,172.94 × 19,966.50
  4. Step 4: Simplify right side
    76,120.76x = 2,279,634,056.43
  5. Step 5: Solve for x
    x = 2,279,634,056.43/76,120.76
  6. Step 6: Final answer
    x = 29,947.60

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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.