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Finding the Fourth Proportional to 89,318.80, 133,978.20 and 36,701.20

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Solution

The fourth proportional to 89,318.80, 133,978.20 and 36,701.20 is: 55,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,318.80 : 133,978.20 = 36,701.20 : x
  2. Step 2: Convert to fraction form
    89,318.80/133,978.20 = 36,701.20/x
  3. Step 3: Cross multiply
    89,318.80x = 133,978.20 × 36,701.20
  4. Step 4: Simplify right side
    89,318.80x = 4,917,160,713.84
  5. Step 5: Solve for x
    x = 4,917,160,713.84/89,318.80
  6. Step 6: Final answer
    x = 55,051.80

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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.