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Finding the Fourth Proportional to 66,368.80, 99,551.92 and 16,449

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Solution

The fourth proportional to 66,368.80, 99,551.92 and 16,449 is: 24,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368.80 : 99,551.92 = 16,449 : x
  2. Step 2: Convert to fraction form
    66,368.80/99,551.92 = 16,449/x
  3. Step 3: Cross multiply
    66,368.80x = 99,551.92 × 16,449
  4. Step 4: Simplify right side
    66,368.80x = 1,637,529,532.08
  5. Step 5: Solve for x
    x = 1,637,529,532.08/66,368.80
  6. Step 6: Final answer
    x = 24,673.18

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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.