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Finding the Fourth Proportional to 50,697.40, 76,039.20 and 13,260.40

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Solution

The fourth proportional to 50,697.40, 76,039.20 and 13,260.40 is: 19,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,697.40 : 76,039.20 = 13,260.40 : x
  2. Step 2: Convert to fraction form
    50,697.40/76,039.20 = 13,260.40/x
  3. Step 3: Cross multiply
    50,697.40x = 76,039.20 × 13,260.40
  4. Step 4: Simplify right side
    50,697.40x = 1,008,310,207.68
  5. Step 5: Solve for x
    x = 1,008,310,207.68/50,697.40
  6. Step 6: Final answer
    x = 19,888.80

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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.