Home / 42,257.62-58,305.66-28,856.78

Finding the Fourth Proportional to 42,257.62, 58,305.66 and 28,856.78

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Solution

The fourth proportional to 42,257.62, 58,305.66 and 28,856.78 is: 39,815.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,257.62 : 58,305.66 = 28,856.78 : x
  2. Step 2: Convert to fraction form
    42,257.62/58,305.66 = 28,856.78/x
  3. Step 3: Cross multiply
    42,257.62x = 58,305.66 × 28,856.78
  4. Step 4: Simplify right side
    42,257.62x = 1,682,513,603.37
  5. Step 5: Solve for x
    x = 1,682,513,603.37/42,257.62
  6. Step 6: Final answer
    x = 39,815.63

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1.5x scale

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.