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Finding the Fourth Proportional to 69,778.50, 105,133.08 and 63,122.74

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Solution

The fourth proportional to 69,778.50, 105,133.08 and 63,122.74 is: 95,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,778.50 : 105,133.08 = 63,122.74 : x
  2. Step 2: Convert to fraction form
    69,778.50/105,133.08 = 63,122.74/x
  3. Step 3: Cross multiply
    69,778.50x = 105,133.08 × 63,122.74
  4. Step 4: Simplify right side
    69,778.50x = 6,636,288,074.24
  5. Step 5: Solve for x
    x = 6,636,288,074.24/69,778.50
  6. Step 6: Final answer
    x = 95,105.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.