Home / 52,186.96-78,280.44-12,743.61

Finding the Fourth Proportional to 52,186.96, 78,280.44 and 12,743.61

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Solution

The fourth proportional to 52,186.96, 78,280.44 and 12,743.61 is: 19,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,186.96 : 78,280.44 = 12,743.61 : x
  2. Step 2: Convert to fraction form
    52,186.96/78,280.44 = 12,743.61/x
  3. Step 3: Cross multiply
    52,186.96x = 78,280.44 × 12,743.61
  4. Step 4: Simplify right side
    52,186.96x = 997,575,397.99
  5. Step 5: Solve for x
    x = 997,575,397.99/52,186.96
  6. Step 6: Final answer
    x = 19,115.42

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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.