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Finding the Fourth Proportional to 66,969.80, 92,432.04 and 38,671.64

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Solution

The fourth proportional to 66,969.80, 92,432.04 and 38,671.64 is: 53,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,969.80 : 92,432.04 = 38,671.64 : x
  2. Step 2: Convert to fraction form
    66,969.80/92,432.04 = 38,671.64/x
  3. Step 3: Cross multiply
    66,969.80x = 92,432.04 × 38,671.64
  4. Step 4: Simplify right side
    66,969.80x = 3,574,498,575.35
  5. Step 5: Solve for x
    x = 3,574,498,575.35/66,969.80
  6. Step 6: Final answer
    x = 53,374.78

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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.