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Finding the Fourth Proportional to 63,078.55, 94,633.79 and 20,958.85

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Solution

The fourth proportional to 63,078.55, 94,633.79 and 20,958.85 is: 31,443.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,078.55 : 94,633.79 = 20,958.85 : x
  2. Step 2: Convert to fraction form
    63,078.55/94,633.79 = 20,958.85/x
  3. Step 3: Cross multiply
    63,078.55x = 94,633.79 × 20,958.85
  4. Step 4: Simplify right side
    63,078.55x = 1,983,415,423.04
  5. Step 5: Solve for x
    x = 1,983,415,423.04/63,078.55
  6. Step 6: Final answer
    x = 31,443.58

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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.