Home / 81,722.85-112,765.01-45,905.94

Finding the Fourth Proportional to 81,722.85, 112,765.01 and 45,905.94

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Solution

The fourth proportional to 81,722.85, 112,765.01 and 45,905.94 is: 63,343.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,722.85 : 112,765.01 = 45,905.94 : x
  2. Step 2: Convert to fraction form
    81,722.85/112,765.01 = 45,905.94/x
  3. Step 3: Cross multiply
    81,722.85x = 112,765.01 × 45,905.94
  4. Step 4: Simplify right side
    81,722.85x = 5,176,583,219.33
  5. Step 5: Solve for x
    x = 5,176,583,219.33/81,722.85
  6. Step 6: Final answer
    x = 63,343.16

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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.