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Finding the Fourth Proportional to 39,704.71, 54,792.62 and 21,800.88

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Solution

The fourth proportional to 39,704.71, 54,792.62 and 21,800.88 is: 30,085.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,704.71 : 54,792.62 = 21,800.88 : x
  2. Step 2: Convert to fraction form
    39,704.71/54,792.62 = 21,800.88/x
  3. Step 3: Cross multiply
    39,704.71x = 54,792.62 × 21,800.88
  4. Step 4: Simplify right side
    39,704.71x = 1,194,527,333.51
  5. Step 5: Solve for x
    x = 1,194,527,333.51/39,704.71
  6. Step 6: Final answer
    x = 30,085.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.