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Finding the Fourth Proportional to 69,122.60, 103,683.90 and 34,130.60

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Solution

The fourth proportional to 69,122.60, 103,683.90 and 34,130.60 is: 51,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,122.60 : 103,683.90 = 34,130.60 : x
  2. Step 2: Convert to fraction form
    69,122.60/103,683.90 = 34,130.60/x
  3. Step 3: Cross multiply
    69,122.60x = 103,683.90 × 34,130.60
  4. Step 4: Simplify right side
    69,122.60x = 3,538,793,717.34
  5. Step 5: Solve for x
    x = 3,538,793,717.34/69,122.60
  6. Step 6: Final answer
    x = 51,195.90

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1.5x scale

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.