Home / 81,276.96-121,967.40-34,529.82

Finding the Fourth Proportional to 81,276.96, 121,967.40 and 34,529.82

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Solution

The fourth proportional to 81,276.96, 121,967.40 and 34,529.82 is: 51,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,276.96 : 121,967.40 = 34,529.82 : x
  2. Step 2: Convert to fraction form
    81,276.96/121,967.40 = 34,529.82/x
  3. Step 3: Cross multiply
    81,276.96x = 121,967.40 × 34,529.82
  4. Step 4: Simplify right side
    81,276.96x = 4,211,512,367.87
  5. Step 5: Solve for x
    x = 4,211,512,367.87/81,276.96
  6. Step 6: Final answer
    x = 51,816.80

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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.