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Finding the Fourth Proportional to 78,803.08, 118,138.10 and 36,661.41

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Solution

The fourth proportional to 78,803.08, 118,138.10 and 36,661.41 is: 54,961.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,803.08 : 118,138.10 = 36,661.41 : x
  2. Step 2: Convert to fraction form
    78,803.08/118,138.10 = 36,661.41/x
  3. Step 3: Cross multiply
    78,803.08x = 118,138.10 × 36,661.41
  4. Step 4: Simplify right side
    78,803.08x = 4,331,109,137.41
  5. Step 5: Solve for x
    x = 4,331,109,137.41/78,803.08
  6. Step 6: Final answer
    x = 54,961.17

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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.