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Finding the Fourth Proportional to 84,295.73, 126,505.80 and 39,922.40

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Solution

The fourth proportional to 84,295.73, 126,505.80 and 39,922.40 is: 59,913.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,295.73 : 126,505.80 = 39,922.40 : x
  2. Step 2: Convert to fraction form
    84,295.73/126,505.80 = 39,922.40/x
  3. Step 3: Cross multiply
    84,295.73x = 126,505.80 × 39,922.40
  4. Step 4: Simplify right side
    84,295.73x = 5,050,415,466.18
  5. Step 5: Solve for x
    x = 5,050,415,466.18/84,295.73
  6. Step 6: Final answer
    x = 59,913.06

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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.