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Finding the Fourth Proportional to 32,389.79, 48,474.94 and 19,917.71

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Solution

The fourth proportional to 32,389.79, 48,474.94 and 19,917.71 is: 29,809.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,389.79 : 48,474.94 = 19,917.71 : x
  2. Step 2: Convert to fraction form
    32,389.79/48,474.94 = 19,917.71/x
  3. Step 3: Cross multiply
    32,389.79x = 48,474.94 × 19,917.71
  4. Step 4: Simplify right side
    32,389.79x = 965,509,797.19
  5. Step 5: Solve for x
    x = 965,509,797.19/32,389.79
  6. Step 6: Final answer
    x = 29,809.08

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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.