Home / 55,872.40-77,103.66-30,721.84

Finding the Fourth Proportional to 55,872.40, 77,103.66 and 30,721.84

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Solution

The fourth proportional to 55,872.40, 77,103.66 and 30,721.84 is: 42,396.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,872.40 : 77,103.66 = 30,721.84 : x
  2. Step 2: Convert to fraction form
    55,872.40/77,103.66 = 30,721.84/x
  3. Step 3: Cross multiply
    55,872.40x = 77,103.66 × 30,721.84
  4. Step 4: Simplify right side
    55,872.40x = 2,368,766,305.93
  5. Step 5: Solve for x
    x = 2,368,766,305.93/55,872.40
  6. Step 6: Final answer
    x = 42,396.00

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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.