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Finding the Fourth Proportional to 86,032.43, 129,066.56 and 43,361.84

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Solution

The fourth proportional to 86,032.43, 129,066.56 and 43,361.84 is: 65,051.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,032.43 : 129,066.56 = 43,361.84 : x
  2. Step 2: Convert to fraction form
    86,032.43/129,066.56 = 43,361.84/x
  3. Step 3: Cross multiply
    86,032.43x = 129,066.56 × 43,361.84
  4. Step 4: Simplify right side
    86,032.43x = 5,596,562,661.93
  5. Step 5: Solve for x
    x = 5,596,562,661.93/86,032.43
  6. Step 6: Final answer
    x = 65,051.78

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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.