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Finding the Fourth Proportional to 70,951.25, 97,913.40 and 39,121.29

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Solution

The fourth proportional to 70,951.25, 97,913.40 and 39,121.29 is: 53,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.25 : 97,913.40 = 39,121.29 : x
  2. Step 2: Convert to fraction form
    70,951.25/97,913.40 = 39,121.29/x
  3. Step 3: Cross multiply
    70,951.25x = 97,913.40 × 39,121.29
  4. Step 4: Simplify right side
    70,951.25x = 3,830,498,516.29
  5. Step 5: Solve for x
    x = 3,830,498,516.29/70,951.25
  6. Step 6: Final answer
    x = 53,987.75

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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.