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Finding the Fourth Proportional to 73,480.64, 101,286.88 and 67,378.72

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Solution

The fourth proportional to 73,480.64, 101,286.88 and 67,378.72 is: 92,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,480.64 : 101,286.88 = 67,378.72 : x
  2. Step 2: Convert to fraction form
    73,480.64/101,286.88 = 67,378.72/x
  3. Step 3: Cross multiply
    73,480.64x = 101,286.88 × 67,378.72
  4. Step 4: Simplify right side
    73,480.64x = 6,824,580,327.19
  5. Step 5: Solve for x
    x = 6,824,580,327.19/73,480.64
  6. Step 6: Final answer
    x = 92,875.90

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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.