Home / 82,429.60-123,717.30-70,619.80

Finding the Fourth Proportional to 82,429.60, 123,717.30 and 70,619.80

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Solution

The fourth proportional to 82,429.60, 123,717.30 and 70,619.80 is: 105,992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,429.60 : 123,717.30 = 70,619.80 : x
  2. Step 2: Convert to fraction form
    82,429.60/123,717.30 = 70,619.80/x
  3. Step 3: Cross multiply
    82,429.60x = 123,717.30 × 70,619.80
  4. Step 4: Simplify right side
    82,429.60x = 8,736,890,982.54
  5. Step 5: Solve for x
    x = 8,736,890,982.54/82,429.60
  6. Step 6: Final answer
    x = 105,992.16

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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.