Home / 115,856.42-159,885.75-64,871.27

Finding the Fourth Proportional to 115,856.42, 159,885.75 and 64,871.27

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Solution

The fourth proportional to 115,856.42, 159,885.75 and 64,871.27 is: 89,524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,856.42 : 159,885.75 = 64,871.27 : x
  2. Step 2: Convert to fraction form
    115,856.42/159,885.75 = 64,871.27/x
  3. Step 3: Cross multiply
    115,856.42x = 159,885.75 × 64,871.27
  4. Step 4: Simplify right side
    115,856.42x = 10,371,990,857.97
  5. Step 5: Solve for x
    x = 10,371,990,857.97/115,856.42
  6. Step 6: Final answer
    x = 89,524.53

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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.