Home / 55,921.22-77,168.96-30,427.68

Finding the Fourth Proportional to 55,921.22, 77,168.96 and 30,427.68

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Solution

The fourth proportional to 55,921.22, 77,168.96 and 30,427.68 is: 41,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,921.22 : 77,168.96 = 30,427.68 : x
  2. Step 2: Convert to fraction form
    55,921.22/77,168.96 = 30,427.68/x
  3. Step 3: Cross multiply
    55,921.22x = 77,168.96 × 30,427.68
  4. Step 4: Simplify right side
    55,921.22x = 2,348,072,537.67
  5. Step 5: Solve for x
    x = 2,348,072,537.67/55,921.22
  6. Step 6: Final answer
    x = 41,988.94

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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.