Home / 56,139.34-84,138.49-28,067.21

Finding the Fourth Proportional to 56,139.34, 84,138.49 and 28,067.21

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Solution

The fourth proportional to 56,139.34, 84,138.49 and 28,067.21 is: 42,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,139.34 : 84,138.49 = 28,067.21 : x
  2. Step 2: Convert to fraction form
    56,139.34/84,138.49 = 28,067.21/x
  3. Step 3: Cross multiply
    56,139.34x = 84,138.49 × 28,067.21
  4. Step 4: Simplify right side
    56,139.34x = 2,361,532,667.91
  5. Step 5: Solve for x
    x = 2,361,532,667.91/56,139.34
  6. Step 6: Final answer
    x = 42,065.56

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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.