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Finding the Fourth Proportional to 70,799.89, 97,704.12 and 38,969.92

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Solution

The fourth proportional to 70,799.89, 97,704.12 and 38,969.92 is: 53,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,799.89 : 97,704.12 = 38,969.92 : x
  2. Step 2: Convert to fraction form
    70,799.89/97,704.12 = 38,969.92/x
  3. Step 3: Cross multiply
    70,799.89x = 97,704.12 × 38,969.92
  4. Step 4: Simplify right side
    70,799.89x = 3,807,521,740.07
  5. Step 5: Solve for x
    x = 3,807,521,740.07/70,799.89
  6. Step 6: Final answer
    x = 53,778.64

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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.