Home / 81,728.78-122,364.76-44,154.23

Finding the Fourth Proportional to 81,728.78, 122,364.76 and 44,154.23

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Solution

The fourth proportional to 81,728.78, 122,364.76 and 44,154.23 is: 66,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,728.78 : 122,364.76 = 44,154.23 : x
  2. Step 2: Convert to fraction form
    81,728.78/122,364.76 = 44,154.23/x
  3. Step 3: Cross multiply
    81,728.78x = 122,364.76 × 44,154.23
  4. Step 4: Simplify right side
    81,728.78x = 5,402,920,924.34
  5. Step 5: Solve for x
    x = 5,402,920,924.34/81,728.78
  6. Step 6: Final answer
    x = 66,107.94

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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.