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Finding the Fourth Proportional to 66,669.52, 92,014.32 and 38,369.20

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Solution

The fourth proportional to 66,669.52, 92,014.32 and 38,369.20 is: 52,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,669.52 : 92,014.32 = 38,369.20 : x
  2. Step 2: Convert to fraction form
    66,669.52/92,014.32 = 38,369.20/x
  3. Step 3: Cross multiply
    66,669.52x = 92,014.32 × 38,369.20
  4. Step 4: Simplify right side
    66,669.52x = 3,530,515,846.94
  5. Step 5: Solve for x
    x = 3,530,515,846.94/66,669.52
  6. Step 6: Final answer
    x = 52,955.47

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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.