Home / 78,322.67-108,082.38-42,511.92

Finding the Fourth Proportional to 78,322.67, 108,082.38 and 42,511.92

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Solution

The fourth proportional to 78,322.67, 108,082.38 and 42,511.92 is: 58,664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.67 : 108,082.38 = 42,511.92 : x
  2. Step 2: Convert to fraction form
    78,322.67/108,082.38 = 42,511.92/x
  3. Step 3: Cross multiply
    78,322.67x = 108,082.38 × 42,511.92
  4. Step 4: Simplify right side
    78,322.67x = 4,594,789,246.08
  5. Step 5: Solve for x
    x = 4,594,789,246.08/78,322.67
  6. Step 6: Final answer
    x = 58,664.87

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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.