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Finding the Fourth Proportional to 53,953.48, 80,938.56 and 18,406.48

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Solution

The fourth proportional to 53,953.48, 80,938.56 and 18,406.48 is: 27,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,953.48 : 80,938.56 = 18,406.48 : x
  2. Step 2: Convert to fraction form
    53,953.48/80,938.56 = 18,406.48/x
  3. Step 3: Cross multiply
    53,953.48x = 80,938.56 × 18,406.48
  4. Step 4: Simplify right side
    53,953.48x = 1,489,794,128.41
  5. Step 5: Solve for x
    x = 1,489,794,128.41/53,953.48
  6. Step 6: Final answer
    x = 27,612.57

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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.