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Finding the Fourth Proportional to 63,355.05, 87,329.48 and 49,905

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Solution

The fourth proportional to 63,355.05, 87,329.48 and 49,905 is: 68,789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,355.05 : 87,329.48 = 49,905 : x
  2. Step 2: Convert to fraction form
    63,355.05/87,329.48 = 49,905/x
  3. Step 3: Cross multiply
    63,355.05x = 87,329.48 × 49,905
  4. Step 4: Simplify right side
    63,355.05x = 4,358,177,449.88
  5. Step 5: Solve for x
    x = 4,358,177,449.88/63,355.05
  6. Step 6: Final answer
    x = 68,789.74

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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.