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Finding the Fourth Proportional to 76,188.60, 105,028.38 and 53,458.92

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Solution

The fourth proportional to 76,188.60, 105,028.38 and 53,458.92 is: 73,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,188.60 : 105,028.38 = 53,458.92 : x
  2. Step 2: Convert to fraction form
    76,188.60/105,028.38 = 53,458.92/x
  3. Step 3: Cross multiply
    76,188.60x = 105,028.38 × 53,458.92
  4. Step 4: Simplify right side
    76,188.60x = 5,614,703,764.15
  5. Step 5: Solve for x
    x = 5,614,703,764.15/76,188.60
  6. Step 6: Final answer
    x = 73,694.80

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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.