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Finding the Fourth Proportional to 81,422.82, 121,953.78 and 62,564.04

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Solution

The fourth proportional to 81,422.82, 121,953.78 and 62,564.04 is: 93,707.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,422.82 : 121,953.78 = 62,564.04 : x
  2. Step 2: Convert to fraction form
    81,422.82/121,953.78 = 62,564.04/x
  3. Step 3: Cross multiply
    81,422.82x = 121,953.78 × 62,564.04
  4. Step 4: Simplify right side
    81,422.82x = 7,629,921,170.07
  5. Step 5: Solve for x
    x = 7,629,921,170.07/81,422.82
  6. Step 6: Final answer
    x = 93,707.41

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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.