Home / 52,629.20-78,905.40-21,448.40

Finding the Fourth Proportional to 52,629.20, 78,905.40 and 21,448.40

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Solution

The fourth proportional to 52,629.20, 78,905.40 and 21,448.40 is: 32,156.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,629.20 : 78,905.40 = 21,448.40 : x
  2. Step 2: Convert to fraction form
    52,629.20/78,905.40 = 21,448.40/x
  3. Step 3: Cross multiply
    52,629.20x = 78,905.40 × 21,448.40
  4. Step 4: Simplify right side
    52,629.20x = 1,692,394,581.36
  5. Step 5: Solve for x
    x = 1,692,394,581.36/52,629.20
  6. Step 6: Final answer
    x = 32,156.95

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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.