Home / 50,319.60-75,431.40-18,721.20

Finding the Fourth Proportional to 50,319.60, 75,431.40 and 18,721.20

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Solution

The fourth proportional to 50,319.60, 75,431.40 and 18,721.20 is: 28,063.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,319.60 : 75,431.40 = 18,721.20 : x
  2. Step 2: Convert to fraction form
    50,319.60/75,431.40 = 18,721.20/x
  3. Step 3: Cross multiply
    50,319.60x = 75,431.40 × 18,721.20
  4. Step 4: Simplify right side
    50,319.60x = 1,412,166,325.68
  5. Step 5: Solve for x
    x = 1,412,166,325.68/50,319.60
  6. Step 6: Final answer
    x = 28,063.94

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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.