Home / 78,328.80-117,508.08-25,753.44

Finding the Fourth Proportional to 78,328.80, 117,508.08 and 25,753.44

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Solution

The fourth proportional to 78,328.80, 117,508.08 and 25,753.44 is: 38,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.80 : 117,508.08 = 25,753.44 : x
  2. Step 2: Convert to fraction form
    78,328.80/117,508.08 = 25,753.44/x
  3. Step 3: Cross multiply
    78,328.80x = 117,508.08 × 25,753.44
  4. Step 4: Simplify right side
    78,328.80x = 3,026,237,287.80
  5. Step 5: Solve for x
    x = 3,026,237,287.80/78,328.80
  6. Step 6: Final answer
    x = 38,635.05

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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.