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Finding the Fourth Proportional to 90,080, 124,317.92 and 49,801.64

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Solution

The fourth proportional to 90,080, 124,317.92 and 49,801.64 is: 68,730.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,080 : 124,317.92 = 49,801.64 : x
  2. Step 2: Convert to fraction form
    90,080/124,317.92 = 49,801.64/x
  3. Step 3: Cross multiply
    90,080x = 124,317.92 × 49,801.64
  4. Step 4: Simplify right side
    90,080x = 6,191,236,297.39
  5. Step 5: Solve for x
    x = 6,191,236,297.39/90,080
  6. Step 6: Final answer
    x = 68,730.42

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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.