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Finding the Fourth Proportional to 90,620.80, 125,053.36 and 50,337.20

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Solution

The fourth proportional to 90,620.80, 125,053.36 and 50,337.20 is: 69,463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,620.80 : 125,053.36 = 50,337.20 : x
  2. Step 2: Convert to fraction form
    90,620.80/125,053.36 = 50,337.20/x
  3. Step 3: Cross multiply
    90,620.80x = 125,053.36 × 50,337.20
  4. Step 4: Simplify right side
    90,620.80x = 6,294,835,992.99
  5. Step 5: Solve for x
    x = 6,294,835,992.99/90,620.80
  6. Step 6: Final answer
    x = 69,463.48

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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.