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Finding the Fourth Proportional to 101,871.26, 140,581.71 and 56,555.81

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Solution

The fourth proportional to 101,871.26, 140,581.71 and 56,555.81 is: 78,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,871.26 : 140,581.71 = 56,555.81 : x
  2. Step 2: Convert to fraction form
    101,871.26/140,581.71 = 56,555.81/x
  3. Step 3: Cross multiply
    101,871.26x = 140,581.71 × 56,555.81
  4. Step 4: Simplify right side
    101,871.26x = 7,950,711,777.33
  5. Step 5: Solve for x
    x = 7,950,711,777.33/101,871.26
  6. Step 6: Final answer
    x = 78,046.67

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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.