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Finding the Fourth Proportional to 40,685.76, 60,945.48 and 30,167.64

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Solution

The fourth proportional to 40,685.76, 60,945.48 and 30,167.64 is: 45,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,685.76 : 60,945.48 = 30,167.64 : x
  2. Step 2: Convert to fraction form
    40,685.76/60,945.48 = 30,167.64/x
  3. Step 3: Cross multiply
    40,685.76x = 60,945.48 × 30,167.64
  4. Step 4: Simplify right side
    40,685.76x = 1,838,581,300.27
  5. Step 5: Solve for x
    x = 1,838,581,300.27/40,685.76
  6. Step 6: Final answer
    x = 45,189.80

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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.