Home / 76,735.04-115,112.28-21,331.04

Finding the Fourth Proportional to 76,735.04, 115,112.28 and 21,331.04

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Solution

The fourth proportional to 76,735.04, 115,112.28 and 21,331.04 is: 31,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,735.04 : 115,112.28 = 21,331.04 : x
  2. Step 2: Convert to fraction form
    76,735.04/115,112.28 = 21,331.04/x
  3. Step 3: Cross multiply
    76,735.04x = 115,112.28 × 21,331.04
  4. Step 4: Simplify right side
    76,735.04x = 2,455,464,649.17
  5. Step 5: Solve for x
    x = 2,455,464,649.17/76,735.04
  6. Step 6: Final answer
    x = 31,999.26

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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.