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Finding the Fourth Proportional to 87,603.40, 120,905.22 and 49,881.16

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Solution

The fourth proportional to 87,603.40, 120,905.22 and 49,881.16 is: 68,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,603.40 : 120,905.22 = 49,881.16 : x
  2. Step 2: Convert to fraction form
    87,603.40/120,905.22 = 49,881.16/x
  3. Step 3: Cross multiply
    87,603.40x = 120,905.22 × 49,881.16
  4. Step 4: Simplify right side
    87,603.40x = 6,030,892,623.66
  5. Step 5: Solve for x
    x = 6,030,892,623.66/87,603.40
  6. Step 6: Final answer
    x = 68,843.13

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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.