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Finding the Fourth Proportional to 81,620.69, 122,417.17 and 37,237.01

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Solution

The fourth proportional to 81,620.69, 122,417.17 and 37,237.01 is: 55,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,620.69 : 122,417.17 = 37,237.01 : x
  2. Step 2: Convert to fraction form
    81,620.69/122,417.17 = 37,237.01/x
  3. Step 3: Cross multiply
    81,620.69x = 122,417.17 × 37,237.01
  4. Step 4: Simplify right side
    81,620.69x = 4,558,448,678.28
  5. Step 5: Solve for x
    x = 4,558,448,678.28/81,620.69
  6. Step 6: Final answer
    x = 55,849.18

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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.