Home / 51,178.80-76,768.18-19,992.18

Finding the Fourth Proportional to 51,178.80, 76,768.18 and 19,992.18

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Solution

The fourth proportional to 51,178.80, 76,768.18 and 19,992.18 is: 29,988.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,178.80 : 76,768.18 = 19,992.18 : x
  2. Step 2: Convert to fraction form
    51,178.80/76,768.18 = 19,992.18/x
  3. Step 3: Cross multiply
    51,178.80x = 76,768.18 × 19,992.18
  4. Step 4: Simplify right side
    51,178.80x = 1,534,763,272.83
  5. Step 5: Solve for x
    x = 1,534,763,272.83/51,178.80
  6. Step 6: Final answer
    x = 29,988.26

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1.5x scale

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.