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Finding the Fourth Proportional to 40,632.80, 60,924.90 and 20,949.80

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Solution

The fourth proportional to 40,632.80, 60,924.90 and 20,949.80 is: 31,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,632.80 : 60,924.90 = 20,949.80 : x
  2. Step 2: Convert to fraction form
    40,632.80/60,924.90 = 20,949.80/x
  3. Step 3: Cross multiply
    40,632.80x = 60,924.90 × 20,949.80
  4. Step 4: Simplify right side
    40,632.80x = 1,276,364,470.02
  5. Step 5: Solve for x
    x = 1,276,364,470.02/40,632.80
  6. Step 6: Final answer
    x = 31,412.17

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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.