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Finding the Fourth Proportional to 50,526.80, 75,811.80 and 31,821.20

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Solution

The fourth proportional to 50,526.80, 75,811.80 and 31,821.20 is: 47,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,526.80 : 75,811.80 = 31,821.20 : x
  2. Step 2: Convert to fraction form
    50,526.80/75,811.80 = 31,821.20/x
  3. Step 3: Cross multiply
    50,526.80x = 75,811.80 × 31,821.20
  4. Step 4: Simplify right side
    50,526.80x = 2,412,422,450.16
  5. Step 5: Solve for x
    x = 2,412,422,450.16/50,526.80
  6. Step 6: Final answer
    x = 47,745.40

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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.