Home / 56,219.92-84,338.52-18,768.40

Finding the Fourth Proportional to 56,219.92, 84,338.52 and 18,768.40

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Solution

The fourth proportional to 56,219.92, 84,338.52 and 18,768.40 is: 28,155.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,219.92 : 84,338.52 = 18,768.40 : x
  2. Step 2: Convert to fraction form
    56,219.92/84,338.52 = 18,768.40/x
  3. Step 3: Cross multiply
    56,219.92x = 84,338.52 × 18,768.40
  4. Step 4: Simplify right side
    56,219.92x = 1,582,899,078.77
  5. Step 5: Solve for x
    x = 1,582,899,078.77/56,219.92
  6. Step 6: Final answer
    x = 28,155.48

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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.