Home / 55,921.76-77,171.90-30,771.26

Finding the Fourth Proportional to 55,921.76, 77,171.90 and 30,771.26

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Solution

The fourth proportional to 55,921.76, 77,171.90 and 30,771.26 is: 42,464.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,921.76 : 77,171.90 = 30,771.26 : x
  2. Step 2: Convert to fraction form
    55,921.76/77,171.90 = 30,771.26/x
  3. Step 3: Cross multiply
    55,921.76x = 77,171.90 × 30,771.26
  4. Step 4: Simplify right side
    55,921.76x = 2,374,676,599.59
  5. Step 5: Solve for x
    x = 2,374,676,599.59/55,921.76
  6. Step 6: Final answer
    x = 42,464.27

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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.