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Finding the Fourth Proportional to 74,423.40, 111,624.30 and 21,827.40

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Solution

The fourth proportional to 74,423.40, 111,624.30 and 21,827.40 is: 32,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,423.40 : 111,624.30 = 21,827.40 : x
  2. Step 2: Convert to fraction form
    74,423.40/111,624.30 = 21,827.40/x
  3. Step 3: Cross multiply
    74,423.40x = 111,624.30 × 21,827.40
  4. Step 4: Simplify right side
    74,423.40x = 2,436,468,245.82
  5. Step 5: Solve for x
    x = 2,436,468,245.82/74,423.40
  6. Step 6: Final answer
    x = 32,737.93

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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.