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Finding the Fourth Proportional to 90,732.48, 125,216.48 and 50,455.24

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Solution

The fourth proportional to 90,732.48, 125,216.48 and 50,455.24 is: 69,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,732.48 : 125,216.48 = 50,455.24 : x
  2. Step 2: Convert to fraction form
    90,732.48/125,216.48 = 50,455.24/x
  3. Step 3: Cross multiply
    90,732.48x = 125,216.48 × 50,455.24
  4. Step 4: Simplify right side
    90,732.48x = 6,317,827,550.36
  5. Step 5: Solve for x
    x = 6,317,827,550.36/90,732.48
  6. Step 6: Final answer
    x = 69,631.38

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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.