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Finding the Fourth Proportional to 72,556.92, 100,131.12 and 42,361.56

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Solution

The fourth proportional to 72,556.92, 100,131.12 and 42,361.56 is: 58,460.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.92 : 100,131.12 = 42,361.56 : x
  2. Step 2: Convert to fraction form
    72,556.92/100,131.12 = 42,361.56/x
  3. Step 3: Cross multiply
    72,556.92x = 100,131.12 × 42,361.56
  4. Step 4: Simplify right side
    72,556.92x = 4,241,710,447.75
  5. Step 5: Solve for x
    x = 4,241,710,447.75/72,556.92
  6. Step 6: Final answer
    x = 58,460.45

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1.5x scale

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.