Home / 81,382.40-122,145.60-48,060.80

Finding the Fourth Proportional to 81,382.40, 122,145.60 and 48,060.80

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Solution

The fourth proportional to 81,382.40, 122,145.60 and 48,060.80 is: 72,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,382.40 : 122,145.60 = 48,060.80 : x
  2. Step 2: Convert to fraction form
    81,382.40/122,145.60 = 48,060.80/x
  3. Step 3: Cross multiply
    81,382.40x = 122,145.60 × 48,060.80
  4. Step 4: Simplify right side
    81,382.40x = 5,870,415,252.48
  5. Step 5: Solve for x
    x = 5,870,415,252.48/81,382.40
  6. Step 6: Final answer
    x = 72,133.72

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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.