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Finding the Fourth Proportional to 66,693.70, 92,040.25 and 38,408.50

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Solution

The fourth proportional to 66,693.70, 92,040.25 and 38,408.50 is: 53,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,693.70 : 92,040.25 = 38,408.50 : x
  2. Step 2: Convert to fraction form
    66,693.70/92,040.25 = 38,408.50/x
  3. Step 3: Cross multiply
    66,693.70x = 92,040.25 × 38,408.50
  4. Step 4: Simplify right side
    66,693.70x = 3,535,127,481.92
  5. Step 5: Solve for x
    x = 3,535,127,481.92/66,693.70
  6. Step 6: Final answer
    x = 53,005.42

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1.5x scale

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.