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Finding the Fourth Proportional to 92,912.27, 128,214.63 and 52,079.90

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Solution

The fourth proportional to 92,912.27, 128,214.63 and 52,079.90 is: 71,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.27 : 128,214.63 = 52,079.90 : x
  2. Step 2: Convert to fraction form
    92,912.27/128,214.63 = 52,079.90/x
  3. Step 3: Cross multiply
    92,912.27x = 128,214.63 × 52,079.90
  4. Step 4: Simplify right side
    92,912.27x = 6,677,404,467.86
  5. Step 5: Solve for x
    x = 6,677,404,467.86/92,912.27
  6. Step 6: Final answer
    x = 71,867.85

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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.