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Finding the Fourth Proportional to 78,944.88, 118,501.62 and 33,988.50

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Solution

The fourth proportional to 78,944.88, 118,501.62 and 33,988.50 is: 51,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,944.88 : 118,501.62 = 33,988.50 : x
  2. Step 2: Convert to fraction form
    78,944.88/118,501.62 = 33,988.50/x
  3. Step 3: Cross multiply
    78,944.88x = 118,501.62 × 33,988.50
  4. Step 4: Simplify right side
    78,944.88x = 4,027,692,311.37
  5. Step 5: Solve for x
    x = 4,027,692,311.37/78,944.88
  6. Step 6: Final answer
    x = 51,019.04

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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.