Home / 81,046.44-121,533.84-36,671.40

Finding the Fourth Proportional to 81,046.44, 121,533.84 and 36,671.40

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Solution

The fourth proportional to 81,046.44, 121,533.84 and 36,671.40 is: 54,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,046.44 : 121,533.84 = 36,671.40 : x
  2. Step 2: Convert to fraction form
    81,046.44/121,533.84 = 36,671.40/x
  3. Step 3: Cross multiply
    81,046.44x = 121,533.84 × 36,671.40
  4. Step 4: Simplify right side
    81,046.44x = 4,456,816,060.18
  5. Step 5: Solve for x
    x = 4,456,816,060.18/81,046.44
  6. Step 6: Final answer
    x = 54,990.89

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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.