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Finding the Fourth Proportional to 50,312.80, 75,469.20 and 13,376.80

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Solution

The fourth proportional to 50,312.80, 75,469.20 and 13,376.80 is: 20,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,312.80 : 75,469.20 = 13,376.80 : x
  2. Step 2: Convert to fraction form
    50,312.80/75,469.20 = 13,376.80/x
  3. Step 3: Cross multiply
    50,312.80x = 75,469.20 × 13,376.80
  4. Step 4: Simplify right side
    50,312.80x = 1,009,536,394.56
  5. Step 5: Solve for x
    x = 1,009,536,394.56/50,312.80
  6. Step 6: Final answer
    x = 20,065.20

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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.