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Finding the Fourth Proportional to 81,052.79, 111,852.54 and 45,242.48

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Solution

The fourth proportional to 81,052.79, 111,852.54 and 45,242.48 is: 62,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.79 : 111,852.54 = 45,242.48 : x
  2. Step 2: Convert to fraction form
    81,052.79/111,852.54 = 45,242.48/x
  3. Step 3: Cross multiply
    81,052.79x = 111,852.54 × 45,242.48
  4. Step 4: Simplify right side
    81,052.79x = 5,060,486,583.53
  5. Step 5: Solve for x
    x = 5,060,486,583.53/81,052.79
  6. Step 6: Final answer
    x = 62,434.46

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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.