Home / 81,389.94-122,119.76-41,974.74

Finding the Fourth Proportional to 81,389.94, 122,119.76 and 41,974.74

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Solution

The fourth proportional to 81,389.94, 122,119.76 and 41,974.74 is: 62,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389.94 : 122,119.76 = 41,974.74 : x
  2. Step 2: Convert to fraction form
    81,389.94/122,119.76 = 41,974.74/x
  3. Step 3: Cross multiply
    81,389.94x = 122,119.76 × 41,974.74
  4. Step 4: Simplify right side
    81,389.94x = 5,125,944,564.26
  5. Step 5: Solve for x
    x = 5,125,944,564.26/81,389.94
  6. Step 6: Final answer
    x = 62,980.08

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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.