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Finding the Fourth Proportional to 84,881.48, 127,128.44 and 40,539.48

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Solution

The fourth proportional to 84,881.48, 127,128.44 and 40,539.48 is: 60,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,881.48 : 127,128.44 = 40,539.48 : x
  2. Step 2: Convert to fraction form
    84,881.48/127,128.44 = 40,539.48/x
  3. Step 3: Cross multiply
    84,881.48x = 127,128.44 × 40,539.48
  4. Step 4: Simplify right side
    84,881.48x = 5,153,720,850.81
  5. Step 5: Solve for x
    x = 5,153,720,850.81/84,881.48
  6. Step 6: Final answer
    x = 60,716.67

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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.