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Finding the Fourth Proportional to 70,375.89, 97,117.75 and 40,170.79

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Solution

The fourth proportional to 70,375.89, 97,117.75 and 40,170.79 is: 55,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,375.89 : 97,117.75 = 40,170.79 : x
  2. Step 2: Convert to fraction form
    70,375.89/97,117.75 = 40,170.79/x
  3. Step 3: Cross multiply
    70,375.89x = 97,117.75 × 40,170.79
  4. Step 4: Simplify right side
    70,375.89x = 3,901,296,740.52
  5. Step 5: Solve for x
    x = 3,901,296,740.52/70,375.89
  6. Step 6: Final answer
    x = 55,435.13

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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.