Home / 86,653.60-129,989.04-31,236.64

Finding the Fourth Proportional to 86,653.60, 129,989.04 and 31,236.64

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Solution

The fourth proportional to 86,653.60, 129,989.04 and 31,236.64 is: 46,858.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,653.60 : 129,989.04 = 31,236.64 : x
  2. Step 2: Convert to fraction form
    86,653.60/129,989.04 = 31,236.64/x
  3. Step 3: Cross multiply
    86,653.60x = 129,989.04 × 31,236.64
  4. Step 4: Simplify right side
    86,653.60x = 4,060,420,846.43
  5. Step 5: Solve for x
    x = 4,060,420,846.43/86,653.60
  6. Step 6: Final answer
    x = 46,858.07

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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.