Home / 50,739.40-76,068.08-21,179.36

Finding the Fourth Proportional to 50,739.40, 76,068.08 and 21,179.36

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Solution

The fourth proportional to 50,739.40, 76,068.08 and 21,179.36 is: 31,751.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,739.40 : 76,068.08 = 21,179.36 : x
  2. Step 2: Convert to fraction form
    50,739.40/76,068.08 = 21,179.36/x
  3. Step 3: Cross multiply
    50,739.40x = 76,068.08 × 21,179.36
  4. Step 4: Simplify right side
    50,739.40x = 1,611,073,533.66
  5. Step 5: Solve for x
    x = 1,611,073,533.66/50,739.40
  6. Step 6: Final answer
    x = 31,751.92

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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.