Home / 55,716.78-76,890.36-30,566.28

Finding the Fourth Proportional to 55,716.78, 76,890.36 and 30,566.28

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Solution

The fourth proportional to 55,716.78, 76,890.36 and 30,566.28 is: 42,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,716.78 : 76,890.36 = 30,566.28 : x
  2. Step 2: Convert to fraction form
    55,716.78/76,890.36 = 30,566.28/x
  3. Step 3: Cross multiply
    55,716.78x = 76,890.36 × 30,566.28
  4. Step 4: Simplify right side
    55,716.78x = 2,350,252,273.06
  5. Step 5: Solve for x
    x = 2,350,252,273.06/55,716.78
  6. Step 6: Final answer
    x = 42,182.13

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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.