Home / 56,139.41-84,190.88-18,689.42

Finding the Fourth Proportional to 56,139.41, 84,190.88 and 18,689.42

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Solution

The fourth proportional to 56,139.41, 84,190.88 and 18,689.42 is: 28,028.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,139.41 : 84,190.88 = 18,689.42 : x
  2. Step 2: Convert to fraction form
    56,139.41/84,190.88 = 18,689.42/x
  3. Step 3: Cross multiply
    56,139.41x = 84,190.88 × 18,689.42
  4. Step 4: Simplify right side
    56,139.41x = 1,573,478,202.09
  5. Step 5: Solve for x
    x = 1,573,478,202.09/56,139.41
  6. Step 6: Final answer
    x = 28,028.05

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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.