Home / 52,104.28-78,156.06-12,661.48

Finding the Fourth Proportional to 52,104.28, 78,156.06 and 12,661.48

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Solution

The fourth proportional to 52,104.28, 78,156.06 and 12,661.48 is: 18,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,104.28 : 78,156.06 = 12,661.48 : x
  2. Step 2: Convert to fraction form
    52,104.28/78,156.06 = 12,661.48/x
  3. Step 3: Cross multiply
    52,104.28x = 78,156.06 × 12,661.48
  4. Step 4: Simplify right side
    52,104.28x = 989,571,390.57
  5. Step 5: Solve for x
    x = 989,571,390.57/52,104.28
  6. Step 6: Final answer
    x = 18,992.13

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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.