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Finding the Fourth Proportional to 67,289.40, 100,945.08 and 22,911.60

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Solution

The fourth proportional to 67,289.40, 100,945.08 and 22,911.60 is: 34,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,289.40 : 100,945.08 = 22,911.60 : x
  2. Step 2: Convert to fraction form
    67,289.40/100,945.08 = 22,911.60/x
  3. Step 3: Cross multiply
    67,289.40x = 100,945.08 × 22,911.60
  4. Step 4: Simplify right side
    67,289.40x = 2,312,813,294.93
  5. Step 5: Solve for x
    x = 2,312,813,294.93/67,289.40
  6. Step 6: Final answer
    x = 34,371.14

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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.