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Finding the Fourth Proportional to 90,973.40, 136,435.80 and 27,793.40

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Solution

The fourth proportional to 90,973.40, 136,435.80 and 27,793.40 is: 41,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,973.40 : 136,435.80 = 27,793.40 : x
  2. Step 2: Convert to fraction form
    90,973.40/136,435.80 = 27,793.40/x
  3. Step 3: Cross multiply
    90,973.40x = 136,435.80 × 27,793.40
  4. Step 4: Simplify right side
    90,973.40x = 3,792,014,763.72
  5. Step 5: Solve for x
    x = 3,792,014,763.72/90,973.40
  6. Step 6: Final answer
    x = 41,682.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.