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Finding the Fourth Proportional to 86,562.99, 129,502.85 and 65,563.56

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Solution

The fourth proportional to 86,562.99, 129,502.85 and 65,563.56 is: 98,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,562.99 : 129,502.85 = 65,563.56 : x
  2. Step 2: Convert to fraction form
    86,562.99/129,502.85 = 65,563.56/x
  3. Step 3: Cross multiply
    86,562.99x = 129,502.85 × 65,563.56
  4. Step 4: Simplify right side
    86,562.99x = 8,490,667,548.33
  5. Step 5: Solve for x
    x = 8,490,667,548.33/86,562.99
  6. Step 6: Final answer
    x = 98,086.58

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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.