Home / 52,112.07-78,168.11-12,669.21

Finding the Fourth Proportional to 52,112.07, 78,168.11 and 12,669.21

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Solution

The fourth proportional to 52,112.07, 78,168.11 and 12,669.21 is: 19,003.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,112.07 : 78,168.11 = 12,669.21 : x
  2. Step 2: Convert to fraction form
    52,112.07/78,168.11 = 12,669.21/x
  3. Step 3: Cross multiply
    52,112.07x = 78,168.11 × 12,669.21
  4. Step 4: Simplify right side
    52,112.07x = 990,328,137.55
  5. Step 5: Solve for x
    x = 990,328,137.55/52,112.07
  6. Step 6: Final answer
    x = 19,003.82

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1.5x scale

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.