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Finding the Fourth Proportional to 52,763.60, 79,078.20 and 21,563.60

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Solution

The fourth proportional to 52,763.60, 79,078.20 and 21,563.60 is: 32,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,763.60 : 79,078.20 = 21,563.60 : x
  2. Step 2: Convert to fraction form
    52,763.60/79,078.20 = 21,563.60/x
  3. Step 3: Cross multiply
    52,763.60x = 79,078.20 × 21,563.60
  4. Step 4: Simplify right side
    52,763.60x = 1,705,210,673.52
  5. Step 5: Solve for x
    x = 1,705,210,673.52/52,763.60
  6. Step 6: Final answer
    x = 32,317.94

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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.