Home / 55,122.28-76,068.39-29,971.78

Finding the Fourth Proportional to 55,122.28, 76,068.39 and 29,971.78

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Solution

The fourth proportional to 55,122.28, 76,068.39 and 29,971.78 is: 41,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,122.28 : 76,068.39 = 29,971.78 : x
  2. Step 2: Convert to fraction form
    55,122.28/76,068.39 = 29,971.78/x
  3. Step 3: Cross multiply
    55,122.28x = 76,068.39 × 29,971.78
  4. Step 4: Simplify right side
    55,122.28x = 2,279,905,050.03
  5. Step 5: Solve for x
    x = 2,279,905,050.03/55,122.28
  6. Step 6: Final answer
    x = 41,360.86

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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.