Home / 52,084.48-78,126.72-12,640.96

Finding the Fourth Proportional to 52,084.48, 78,126.72 and 12,640.96

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Solution

The fourth proportional to 52,084.48, 78,126.72 and 12,640.96 is: 18,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,084.48 : 78,126.72 = 12,640.96 : x
  2. Step 2: Convert to fraction form
    52,084.48/78,126.72 = 12,640.96/x
  3. Step 3: Cross multiply
    52,084.48x = 78,126.72 × 12,640.96
  4. Step 4: Simplify right side
    52,084.48x = 987,596,742.45
  5. Step 5: Solve for x
    x = 987,596,742.45/52,084.48
  6. Step 6: Final answer
    x = 18,961.44

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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.