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Finding the Fourth Proportional to 72,883.53, 100,604.43 and 42,678.56

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Solution

The fourth proportional to 72,883.53, 100,604.43 and 42,678.56 is: 58,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,883.53 : 100,604.43 = 42,678.56 : x
  2. Step 2: Convert to fraction form
    72,883.53/100,604.43 = 42,678.56/x
  3. Step 3: Cross multiply
    72,883.53x = 100,604.43 × 42,678.56
  4. Step 4: Simplify right side
    72,883.53x = 4,293,652,453.53
  5. Step 5: Solve for x
    x = 4,293,652,453.53/72,883.53
  6. Step 6: Final answer
    x = 58,911.15

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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.