Home / 78,363.23-108,141.48-42,553.85

Finding the Fourth Proportional to 78,363.23, 108,141.48 and 42,553.85

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Solution

The fourth proportional to 78,363.23, 108,141.48 and 42,553.85 is: 58,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.23 : 108,141.48 = 42,553.85 : x
  2. Step 2: Convert to fraction form
    78,363.23/108,141.48 = 42,553.85/x
  3. Step 3: Cross multiply
    78,363.23x = 108,141.48 × 42,553.85
  4. Step 4: Simplify right side
    78,363.23x = 4,601,835,777.99
  5. Step 5: Solve for x
    x = 4,601,835,777.99/78,363.23
  6. Step 6: Final answer
    x = 58,724.43

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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.