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Finding the Fourth Proportional to 92,478.57, 127,644.69 and 54,243.73

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Solution

The fourth proportional to 92,478.57, 127,644.69 and 54,243.73 is: 74,870.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,478.57 : 127,644.69 = 54,243.73 : x
  2. Step 2: Convert to fraction form
    92,478.57/127,644.69 = 54,243.73/x
  3. Step 3: Cross multiply
    92,478.57x = 127,644.69 × 54,243.73
  4. Step 4: Simplify right side
    92,478.57x = 6,923,924,100.29
  5. Step 5: Solve for x
    x = 6,923,924,100.29/92,478.57
  6. Step 6: Final answer
    x = 74,870.58

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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.