Home / 52,453.20-78,712.61-21,288.45

Finding the Fourth Proportional to 52,453.20, 78,712.61 and 21,288.45

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Solution

The fourth proportional to 52,453.20, 78,712.61 and 21,288.45 is: 31,945.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,453.20 : 78,712.61 = 21,288.45 : x
  2. Step 2: Convert to fraction form
    52,453.20/78,712.61 = 21,288.45/x
  3. Step 3: Cross multiply
    52,453.20x = 78,712.61 × 21,288.45
  4. Step 4: Simplify right side
    52,453.20x = 1,675,669,355.91
  5. Step 5: Solve for x
    x = 1,675,669,355.91/52,453.20
  6. Step 6: Final answer
    x = 31,945.99

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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.