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Finding the Fourth Proportional to 71,052.80, 106,374.40 and 43,404.80

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Solution

The fourth proportional to 71,052.80, 106,374.40 and 43,404.80 is: 64,982.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,052.80 : 106,374.40 = 43,404.80 : x
  2. Step 2: Convert to fraction form
    71,052.80/106,374.40 = 43,404.80/x
  3. Step 3: Cross multiply
    71,052.80x = 106,374.40 × 43,404.80
  4. Step 4: Simplify right side
    71,052.80x = 4,617,159,557.12
  5. Step 5: Solve for x
    x = 4,617,159,557.12/71,052.80
  6. Step 6: Final answer
    x = 64,982.09

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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.