Home / 56,421.72-84,638.22-20,892.55

Finding the Fourth Proportional to 56,421.72, 84,638.22 and 20,892.55

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Solution

The fourth proportional to 56,421.72, 84,638.22 and 20,892.55 is: 31,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,421.72 : 84,638.22 = 20,892.55 : x
  2. Step 2: Convert to fraction form
    56,421.72/84,638.22 = 20,892.55/x
  3. Step 3: Cross multiply
    56,421.72x = 84,638.22 × 20,892.55
  4. Step 4: Simplify right side
    56,421.72x = 1,768,308,243.26
  5. Step 5: Solve for x
    x = 1,768,308,243.26/56,421.72
  6. Step 6: Final answer
    x = 31,340.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.