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Finding the Fourth Proportional to 50,958.78, 70,329.59 and 30,815.80

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Solution

The fourth proportional to 50,958.78, 70,329.59 and 30,815.80 is: 42,529.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,958.78 : 70,329.59 = 30,815.80 : x
  2. Step 2: Convert to fraction form
    50,958.78/70,329.59 = 30,815.80/x
  3. Step 3: Cross multiply
    50,958.78x = 70,329.59 × 30,815.80
  4. Step 4: Simplify right side
    50,958.78x = 2,167,262,365.18
  5. Step 5: Solve for x
    x = 2,167,262,365.18/50,958.78
  6. Step 6: Final answer
    x = 42,529.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.