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Finding the Fourth Proportional to 86,593.48, 129,861.06 and 69,913.96

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Solution

The fourth proportional to 86,593.48, 129,861.06 and 69,913.96 is: 104,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,593.48 : 129,861.06 = 69,913.96 : x
  2. Step 2: Convert to fraction form
    86,593.48/129,861.06 = 69,913.96/x
  3. Step 3: Cross multiply
    86,593.48x = 129,861.06 × 69,913.96
  4. Step 4: Simplify right side
    86,593.48x = 9,079,100,954.40
  5. Step 5: Solve for x
    x = 9,079,100,954.40/86,593.48
  6. Step 6: Final answer
    x = 104,847.40

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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.