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Finding the Fourth Proportional to 45,185.01, 67,750.14 and 20,220.40

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Solution

The fourth proportional to 45,185.01, 67,750.14 and 20,220.40 is: 30,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,185.01 : 67,750.14 = 20,220.40 : x
  2. Step 2: Convert to fraction form
    45,185.01/67,750.14 = 20,220.40/x
  3. Step 3: Cross multiply
    45,185.01x = 67,750.14 × 20,220.40
  4. Step 4: Simplify right side
    45,185.01x = 1,369,934,930.86
  5. Step 5: Solve for x
    x = 1,369,934,930.86/45,185.01
  6. Step 6: Final answer
    x = 30,318.35

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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.