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Finding the Fourth Proportional to 105,361.76, 145,396.40 and 62,343.48

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Solution

The fourth proportional to 105,361.76, 145,396.40 and 62,343.48 is: 86,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.76 : 145,396.40 = 62,343.48 : x
  2. Step 2: Convert to fraction form
    105,361.76/145,396.40 = 62,343.48/x
  3. Step 3: Cross multiply
    105,361.76x = 145,396.40 × 62,343.48
  4. Step 4: Simplify right side
    105,361.76x = 9,064,517,555.47
  5. Step 5: Solve for x
    x = 9,064,517,555.47/105,361.76
  6. Step 6: Final answer
    x = 86,032.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.