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Finding the Fourth Proportional to 85,353.87, 117,843.83 and 76,385.96

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Solution

The fourth proportional to 85,353.87, 117,843.83 and 76,385.96 is: 105,462.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,353.87 : 117,843.83 = 76,385.96 : x
  2. Step 2: Convert to fraction form
    85,353.87/117,843.83 = 76,385.96/x
  3. Step 3: Cross multiply
    85,353.87x = 117,843.83 × 76,385.96
  4. Step 4: Simplify right side
    85,353.87x = 9,001,613,113.48
  5. Step 5: Solve for x
    x = 9,001,613,113.48/85,353.87
  6. Step 6: Final answer
    x = 105,462.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.