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Finding the Fourth Proportional to 51,356.40, 76,883.40 and 38,266.80

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Solution

The fourth proportional to 51,356.40, 76,883.40 and 38,266.80 is: 57,287.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,356.40 : 76,883.40 = 38,266.80 : x
  2. Step 2: Convert to fraction form
    51,356.40/76,883.40 = 38,266.80/x
  3. Step 3: Cross multiply
    51,356.40x = 76,883.40 × 38,266.80
  4. Step 4: Simplify right side
    51,356.40x = 2,942,081,691.12
  5. Step 5: Solve for x
    x = 2,942,081,691.12/51,356.40
  6. Step 6: Final answer
    x = 57,287.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.