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Finding the Fourth Proportional to 40,471.68, 60,715.20 and 18,284.80

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Solution

The fourth proportional to 40,471.68, 60,715.20 and 18,284.80 is: 27,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,471.68 : 60,715.20 = 18,284.80 : x
  2. Step 2: Convert to fraction form
    40,471.68/60,715.20 = 18,284.80/x
  3. Step 3: Cross multiply
    40,471.68x = 60,715.20 × 18,284.80
  4. Step 4: Simplify right side
    40,471.68x = 1,110,165,288.96
  5. Step 5: Solve for x
    x = 1,110,165,288.96/40,471.68
  6. Step 6: Final answer
    x = 27,430.67

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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.