Home / 78,553.46-108,403.28-42,743.60

Finding the Fourth Proportional to 78,553.46, 108,403.28 and 42,743.60

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Solution

The fourth proportional to 78,553.46, 108,403.28 and 42,743.60 is: 58,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,553.46 : 108,403.28 = 42,743.60 : x
  2. Step 2: Convert to fraction form
    78,553.46/108,403.28 = 42,743.60/x
  3. Step 3: Cross multiply
    78,553.46x = 108,403.28 × 42,743.60
  4. Step 4: Simplify right side
    78,553.46x = 4,633,546,439.01
  5. Step 5: Solve for x
    x = 4,633,546,439.01/78,553.46
  6. Step 6: Final answer
    x = 58,985.90

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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.