Home / 85,817.16-128,705.23-29,659.25

Finding the Fourth Proportional to 85,817.16, 128,705.23 and 29,659.25

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Solution

The fourth proportional to 85,817.16, 128,705.23 and 29,659.25 is: 44,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,817.16 : 128,705.23 = 29,659.25 : x
  2. Step 2: Convert to fraction form
    85,817.16/128,705.23 = 29,659.25/x
  3. Step 3: Cross multiply
    85,817.16x = 128,705.23 × 29,659.25
  4. Step 4: Simplify right side
    85,817.16x = 3,817,300,592.88
  5. Step 5: Solve for x
    x = 3,817,300,592.88/85,817.16
  6. Step 6: Final answer
    x = 44,481.79

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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.