Home / 76,961.70-115,442.54-39,005.06

Finding the Fourth Proportional to 76,961.70, 115,442.54 and 39,005.06

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Solution

The fourth proportional to 76,961.70, 115,442.54 and 39,005.06 is: 58,507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,961.70 : 115,442.54 = 39,005.06 : x
  2. Step 2: Convert to fraction form
    76,961.70/115,442.54 = 39,005.06/x
  3. Step 3: Cross multiply
    76,961.70x = 115,442.54 × 39,005.06
  4. Step 4: Simplify right side
    76,961.70x = 4,502,842,622.04
  5. Step 5: Solve for x
    x = 4,502,842,622.04/76,961.70
  6. Step 6: Final answer
    x = 58,507.58

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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.