Home / 76,428.83-114,640.16-38,988.08

Finding the Fourth Proportional to 76,428.83, 114,640.16 and 38,988.08

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Solution

The fourth proportional to 76,428.83, 114,640.16 and 38,988.08 is: 58,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,428.83 : 114,640.16 = 38,988.08 : x
  2. Step 2: Convert to fraction form
    76,428.83/114,640.16 = 38,988.08/x
  3. Step 3: Cross multiply
    76,428.83x = 114,640.16 × 38,988.08
  4. Step 4: Simplify right side
    76,428.83x = 4,469,598,961.15
  5. Step 5: Solve for x
    x = 4,469,598,961.15/76,428.83
  6. Step 6: Final answer
    x = 58,480.54

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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.