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Finding the Fourth Proportional to 66,905.63, 92,329.67 and 38,611.32

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Solution

The fourth proportional to 66,905.63, 92,329.67 and 38,611.32 is: 53,283.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,905.63 : 92,329.67 = 38,611.32 : x
  2. Step 2: Convert to fraction form
    66,905.63/92,329.67 = 38,611.32/x
  3. Step 3: Cross multiply
    66,905.63x = 92,329.67 × 38,611.32
  4. Step 4: Simplify right side
    66,905.63x = 3,564,970,184.16
  5. Step 5: Solve for x
    x = 3,564,970,184.16/66,905.63
  6. Step 6: Final answer
    x = 53,283.56

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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.