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Finding the Fourth Proportional to 40,471.80, 60,707.56 and 18,831.12

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Solution

The fourth proportional to 40,471.80, 60,707.56 and 18,831.12 is: 28,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,471.80 : 60,707.56 = 18,831.12 : x
  2. Step 2: Convert to fraction form
    40,471.80/60,707.56 = 18,831.12/x
  3. Step 3: Cross multiply
    40,471.80x = 60,707.56 × 18,831.12
  4. Step 4: Simplify right side
    40,471.80x = 1,143,191,347.27
  5. Step 5: Solve for x
    x = 1,143,191,347.27/40,471.80
  6. Step 6: Final answer
    x = 28,246.61

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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.