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Finding the Fourth Proportional to 70,971.39, 106,137.54 and 63,120.06

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Solution

The fourth proportional to 70,971.39, 106,137.54 and 63,120.06 is: 94,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,971.39 : 106,137.54 = 63,120.06 : x
  2. Step 2: Convert to fraction form
    70,971.39/106,137.54 = 63,120.06/x
  3. Step 3: Cross multiply
    70,971.39x = 106,137.54 × 63,120.06
  4. Step 4: Simplify right side
    70,971.39x = 6,699,407,893.05
  5. Step 5: Solve for x
    x = 6,699,407,893.05/70,971.39
  6. Step 6: Final answer
    x = 94,395.90

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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.