Home / 52,104.84-78,157.32-12,661.96

Finding the Fourth Proportional to 52,104.84, 78,157.32 and 12,661.96

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Solution

The fourth proportional to 52,104.84, 78,157.32 and 12,661.96 is: 18,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,104.84 : 78,157.32 = 12,661.96 : x
  2. Step 2: Convert to fraction form
    52,104.84/78,157.32 = 12,661.96/x
  3. Step 3: Cross multiply
    52,104.84x = 78,157.32 × 12,661.96
  4. Step 4: Simplify right side
    52,104.84x = 989,624,859.55
  5. Step 5: Solve for x
    x = 989,624,859.55/52,104.84
  6. Step 6: Final answer
    x = 18,992.95

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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.