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Finding the Fourth Proportional to 71,733.60, 107,600.40 and 51,919.20

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Solution

The fourth proportional to 71,733.60, 107,600.40 and 51,919.20 is: 77,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,733.60 : 107,600.40 = 51,919.20 : x
  2. Step 2: Convert to fraction form
    71,733.60/107,600.40 = 51,919.20/x
  3. Step 3: Cross multiply
    71,733.60x = 107,600.40 × 51,919.20
  4. Step 4: Simplify right side
    71,733.60x = 5,586,526,687.68
  5. Step 5: Solve for x
    x = 5,586,526,687.68/71,733.60
  6. Step 6: Final answer
    x = 77,878.80

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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.