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Finding the Fourth Proportional to 56,605.60, 84,908.40 and 55,147.60

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Solution

The fourth proportional to 56,605.60, 84,908.40 and 55,147.60 is: 82,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,605.60 : 84,908.40 = 55,147.60 : x
  2. Step 2: Convert to fraction form
    56,605.60/84,908.40 = 55,147.60/x
  3. Step 3: Cross multiply
    56,605.60x = 84,908.40 × 55,147.60
  4. Step 4: Simplify right side
    56,605.60x = 4,682,494,479.84
  5. Step 5: Solve for x
    x = 4,682,494,479.84/56,605.60
  6. Step 6: Final answer
    x = 82,721.40

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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.