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Finding the Fourth Proportional to 87,804.69, 131,707.80 and 21,244.89

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Solution

The fourth proportional to 87,804.69, 131,707.80 and 21,244.89 is: 31,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,804.69 : 131,707.80 = 21,244.89 : x
  2. Step 2: Convert to fraction form
    87,804.69/131,707.80 = 21,244.89/x
  3. Step 3: Cross multiply
    87,804.69x = 131,707.80 × 21,244.89
  4. Step 4: Simplify right side
    87,804.69x = 2,798,117,064.60
  5. Step 5: Solve for x
    x = 2,798,117,064.60/87,804.69
  6. Step 6: Final answer
    x = 31,867.51

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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.