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Finding the Fourth Proportional to 49,599.80, 74,400.08 and 18,435

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Solution

The fourth proportional to 49,599.80, 74,400.08 and 18,435 is: 27,652.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,599.80 : 74,400.08 = 18,435 : x
  2. Step 2: Convert to fraction form
    49,599.80/74,400.08 = 18,435/x
  3. Step 3: Cross multiply
    49,599.80x = 74,400.08 × 18,435
  4. Step 4: Simplify right side
    49,599.80x = 1,371,565,474.80
  5. Step 5: Solve for x
    x = 1,371,565,474.80/49,599.80
  6. Step 6: Final answer
    x = 27,652.64

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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.