Home / 81,964.40-122,946.60-46,389.20

Finding the Fourth Proportional to 81,964.40, 122,946.60 and 46,389.20

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Solution

The fourth proportional to 81,964.40, 122,946.60 and 46,389.20 is: 69,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.40 : 122,946.60 = 46,389.20 : x
  2. Step 2: Convert to fraction form
    81,964.40/122,946.60 = 46,389.20/x
  3. Step 3: Cross multiply
    81,964.40x = 122,946.60 × 46,389.20
  4. Step 4: Simplify right side
    81,964.40x = 5,703,394,416.72
  5. Step 5: Solve for x
    x = 5,703,394,416.72/81,964.40
  6. Step 6: Final answer
    x = 69,583.80

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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.