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Finding the Fourth Proportional to 69,731, 104,975.94 and 63,530.86

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Solution

The fourth proportional to 69,731, 104,975.94 and 63,530.86 is: 95,641.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,731 : 104,975.94 = 63,530.86 : x
  2. Step 2: Convert to fraction form
    69,731/104,975.94 = 63,530.86/x
  3. Step 3: Cross multiply
    69,731x = 104,975.94 × 63,530.86
  4. Step 4: Simplify right side
    69,731x = 6,669,211,747.51
  5. Step 5: Solve for x
    x = 6,669,211,747.51/69,731
  6. Step 6: Final answer
    x = 95,641.99

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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.