Home / 80,768.48-121,156.80-30,852.88

Finding the Fourth Proportional to 80,768.48, 121,156.80 and 30,852.88

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Solution

The fourth proportional to 80,768.48, 121,156.80 and 30,852.88 is: 46,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,768.48 : 121,156.80 = 30,852.88 : x
  2. Step 2: Convert to fraction form
    80,768.48/121,156.80 = 30,852.88/x
  3. Step 3: Cross multiply
    80,768.48x = 121,156.80 × 30,852.88
  4. Step 4: Simplify right side
    80,768.48x = 3,738,036,211.58
  5. Step 5: Solve for x
    x = 3,738,036,211.58/80,768.48
  6. Step 6: Final answer
    x = 46,280.88

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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.