Home / 55,720.43-76,892.87-30,855.89

Finding the Fourth Proportional to 55,720.43, 76,892.87 and 30,855.89

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Solution

The fourth proportional to 55,720.43, 76,892.87 and 30,855.89 is: 42,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,720.43 : 76,892.87 = 30,855.89 : x
  2. Step 2: Convert to fraction form
    55,720.43/76,892.87 = 30,855.89/x
  3. Step 3: Cross multiply
    55,720.43x = 76,892.87 × 30,855.89
  4. Step 4: Simplify right side
    55,720.43x = 2,372,598,175.16
  5. Step 5: Solve for x
    x = 2,372,598,175.16/55,720.43
  6. Step 6: Final answer
    x = 42,580.40

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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.