Home / 71,749.18-99,012.34-41,535.78

Finding the Fourth Proportional to 71,749.18, 99,012.34 and 41,535.78

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Solution

The fourth proportional to 71,749.18, 99,012.34 and 41,535.78 is: 57,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.18 : 99,012.34 = 41,535.78 : x
  2. Step 2: Convert to fraction form
    71,749.18/99,012.34 = 41,535.78/x
  3. Step 3: Cross multiply
    71,749.18x = 99,012.34 × 41,535.78
  4. Step 4: Simplify right side
    71,749.18x = 4,112,554,771.53
  5. Step 5: Solve for x
    x = 4,112,554,771.53/71,749.18
  6. Step 6: Final answer
    x = 57,318.49

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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.