Home / 55,051.87-75,972.99-31,178.20

Finding the Fourth Proportional to 55,051.87, 75,972.99 and 31,178.20

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Solution

The fourth proportional to 55,051.87, 75,972.99 and 31,178.20 is: 43,026.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,051.87 : 75,972.99 = 31,178.20 : x
  2. Step 2: Convert to fraction form
    55,051.87/75,972.99 = 31,178.20/x
  3. Step 3: Cross multiply
    55,051.87x = 75,972.99 × 31,178.20
  4. Step 4: Simplify right side
    55,051.87x = 2,368,701,076.82
  5. Step 5: Solve for x
    x = 2,368,701,076.82/55,051.87
  6. Step 6: Final answer
    x = 43,026.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.