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Finding the Fourth Proportional to 72,438.62, 108,635.42 and 34,975.40

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Solution

The fourth proportional to 72,438.62, 108,635.42 and 34,975.40 is: 52,452.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.62 : 108,635.42 = 34,975.40 : x
  2. Step 2: Convert to fraction form
    72,438.62/108,635.42 = 34,975.40/x
  3. Step 3: Cross multiply
    72,438.62x = 108,635.42 × 34,975.40
  4. Step 4: Simplify right side
    72,438.62x = 3,799,566,812.93
  5. Step 5: Solve for x
    x = 3,799,566,812.93/72,438.62
  6. Step 6: Final answer
    x = 52,452.23

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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.