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Finding the Fourth Proportional to 91,203.84, 136,826.76 and 28,874.34

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Solution

The fourth proportional to 91,203.84, 136,826.76 and 28,874.34 is: 43,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,203.84 : 136,826.76 = 28,874.34 : x
  2. Step 2: Convert to fraction form
    91,203.84/136,826.76 = 28,874.34/x
  3. Step 3: Cross multiply
    91,203.84x = 136,826.76 × 28,874.34
  4. Step 4: Simplify right side
    91,203.84x = 3,950,782,389.34
  5. Step 5: Solve for x
    x = 3,950,782,389.34/91,203.84
  6. Step 6: Final answer
    x = 43,318.16

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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.