Home / 48,409.12-72,644.88-20,707.36

Finding the Fourth Proportional to 48,409.12, 72,644.88 and 20,707.36

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Solution

The fourth proportional to 48,409.12, 72,644.88 and 20,707.36 is: 31,074.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,409.12 : 72,644.88 = 20,707.36 : x
  2. Step 2: Convert to fraction form
    48,409.12/72,644.88 = 20,707.36/x
  3. Step 3: Cross multiply
    48,409.12x = 72,644.88 × 20,707.36
  4. Step 4: Simplify right side
    48,409.12x = 1,504,283,682.32
  5. Step 5: Solve for x
    x = 1,504,283,682.32/48,409.12
  6. Step 6: Final answer
    x = 31,074.39

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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.