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Finding the Fourth Proportional to 69,991.09, 105,035.84 and 63,298.87

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Solution

The fourth proportional to 69,991.09, 105,035.84 and 63,298.87 is: 94,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.09 : 105,035.84 = 63,298.87 : x
  2. Step 2: Convert to fraction form
    69,991.09/105,035.84 = 63,298.87/x
  3. Step 3: Cross multiply
    69,991.09x = 105,035.84 × 63,298.87
  4. Step 4: Simplify right side
    69,991.09x = 6,648,649,639.79
  5. Step 5: Solve for x
    x = 6,648,649,639.79/69,991.09
  6. Step 6: Final answer
    x = 94,992.80

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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.