Home / 52,103.62-78,134.64-18,812.08

Finding the Fourth Proportional to 52,103.62, 78,134.64 and 18,812.08

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Solution

The fourth proportional to 52,103.62, 78,134.64 and 18,812.08 is: 28,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,103.62 : 78,134.64 = 18,812.08 : x
  2. Step 2: Convert to fraction form
    52,103.62/78,134.64 = 18,812.08/x
  3. Step 3: Cross multiply
    52,103.62x = 78,134.64 × 18,812.08
  4. Step 4: Simplify right side
    52,103.62x = 1,469,875,098.45
  5. Step 5: Solve for x
    x = 1,469,875,098.45/52,103.62
  6. Step 6: Final answer
    x = 28,210.61

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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.