Home / 78,322.20-108,081.72-42,511.44

Finding the Fourth Proportional to 78,322.20, 108,081.72 and 42,511.44

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Solution

The fourth proportional to 78,322.20, 108,081.72 and 42,511.44 is: 58,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.20 : 108,081.72 = 42,511.44 : x
  2. Step 2: Convert to fraction form
    78,322.20/108,081.72 = 42,511.44/x
  3. Step 3: Cross multiply
    78,322.20x = 108,081.72 × 42,511.44
  4. Step 4: Simplify right side
    78,322.20x = 4,594,709,554.88
  5. Step 5: Solve for x
    x = 4,594,709,554.88/78,322.20
  6. Step 6: Final answer
    x = 58,664.20

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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.