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Finding the Fourth Proportional to 70,072.66, 96,697.83 and 39,855.70

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Solution

The fourth proportional to 70,072.66, 96,697.83 and 39,855.70 is: 54,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.66 : 96,697.83 = 39,855.70 : x
  2. Step 2: Convert to fraction form
    70,072.66/96,697.83 = 39,855.70/x
  3. Step 3: Cross multiply
    70,072.66x = 96,697.83 × 39,855.70
  4. Step 4: Simplify right side
    70,072.66x = 3,853,959,703.13
  5. Step 5: Solve for x
    x = 3,853,959,703.13/70,072.66
  6. Step 6: Final answer
    x = 54,999.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.