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Finding the Fourth Proportional to 92,836.94, 128,102.34 and 54,573.78

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Solution

The fourth proportional to 92,836.94, 128,102.34 and 54,573.78 is: 75,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,836.94 : 128,102.34 = 54,573.78 : x
  2. Step 2: Convert to fraction form
    92,836.94/128,102.34 = 54,573.78/x
  3. Step 3: Cross multiply
    92,836.94x = 128,102.34 × 54,573.78
  4. Step 4: Simplify right side
    92,836.94x = 6,991,029,605.68
  5. Step 5: Solve for x
    x = 6,991,029,605.68/92,836.94
  6. Step 6: Final answer
    x = 75,304.40

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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.