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Finding the Fourth Proportional to 71,393.60, 107,090.40 and 54,804.80

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Solution

The fourth proportional to 71,393.60, 107,090.40 and 54,804.80 is: 82,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.60 : 107,090.40 = 54,804.80 : x
  2. Step 2: Convert to fraction form
    71,393.60/107,090.40 = 54,804.80/x
  3. Step 3: Cross multiply
    71,393.60x = 107,090.40 × 54,804.80
  4. Step 4: Simplify right side
    71,393.60x = 5,869,067,953.92
  5. Step 5: Solve for x
    x = 5,869,067,953.92/71,393.60
  6. Step 6: Final answer
    x = 82,207.20

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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.