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Finding the Fourth Proportional to 69,175.40, 103,763.10 and 61,010.60

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Solution

The fourth proportional to 69,175.40, 103,763.10 and 61,010.60 is: 91,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,175.40 : 103,763.10 = 61,010.60 : x
  2. Step 2: Convert to fraction form
    69,175.40/103,763.10 = 61,010.60/x
  3. Step 3: Cross multiply
    69,175.40x = 103,763.10 × 61,010.60
  4. Step 4: Simplify right side
    69,175.40x = 6,330,648,988.86
  5. Step 5: Solve for x
    x = 6,330,648,988.86/69,175.40
  6. Step 6: Final answer
    x = 91,515.90

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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.