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Finding the Fourth Proportional to 50,477.88, 75,717.10 and 20,879.68

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Solution

The fourth proportional to 50,477.88, 75,717.10 and 20,879.68 is: 31,319.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,477.88 : 75,717.10 = 20,879.68 : x
  2. Step 2: Convert to fraction form
    50,477.88/75,717.10 = 20,879.68/x
  3. Step 3: Cross multiply
    50,477.88x = 75,717.10 × 20,879.68
  4. Step 4: Simplify right side
    50,477.88x = 1,580,948,818.53
  5. Step 5: Solve for x
    x = 1,580,948,818.53/50,477.88
  6. Step 6: Final answer
    x = 31,319.64

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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.