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Finding the Fourth Proportional to 50,758.73, 75,978.15 and 45,409.46

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Solution

The fourth proportional to 50,758.73, 75,978.15 and 45,409.46 is: 67,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,758.73 : 75,978.15 = 45,409.46 : x
  2. Step 2: Convert to fraction form
    50,758.73/75,978.15 = 45,409.46/x
  3. Step 3: Cross multiply
    50,758.73x = 75,978.15 × 45,409.46
  4. Step 4: Simplify right side
    50,758.73x = 3,450,126,383.41
  5. Step 5: Solve for x
    x = 3,450,126,383.41/50,758.73
  6. Step 6: Final answer
    x = 67,971.10

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1.5x scale

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.