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Finding the Fourth Proportional to 79,983.36, 120,009.60 and 44,870.40

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Solution

The fourth proportional to 79,983.36, 120,009.60 and 44,870.40 is: 67,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,983.36 : 120,009.60 = 44,870.40 : x
  2. Step 2: Convert to fraction form
    79,983.36/120,009.60 = 44,870.40/x
  3. Step 3: Cross multiply
    79,983.36x = 120,009.60 × 44,870.40
  4. Step 4: Simplify right side
    79,983.36x = 5,384,878,755.84
  5. Step 5: Solve for x
    x = 5,384,878,755.84/79,983.36
  6. Step 6: Final answer
    x = 67,324.99

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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.