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Finding the Fourth Proportional to 84,539.99, 126,829.43 and 25,376.78

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Solution

The fourth proportional to 84,539.99, 126,829.43 and 25,376.78 is: 38,071.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,539.99 : 126,829.43 = 25,376.78 : x
  2. Step 2: Convert to fraction form
    84,539.99/126,829.43 = 25,376.78/x
  3. Step 3: Cross multiply
    84,539.99x = 126,829.43 × 25,376.78
  4. Step 4: Simplify right side
    84,539.99x = 3,218,522,542.64
  5. Step 5: Solve for x
    x = 3,218,522,542.64/84,539.99
  6. Step 6: Final answer
    x = 38,071.01

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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.