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Finding the Fourth Proportional to 53,445, 80,177.20 and 18,376.86

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Solution

The fourth proportional to 53,445, 80,177.20 and 18,376.86 is: 27,568.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,445 : 80,177.20 = 18,376.86 : x
  2. Step 2: Convert to fraction form
    53,445/80,177.20 = 18,376.86/x
  3. Step 3: Cross multiply
    53,445x = 80,177.20 × 18,376.86
  4. Step 4: Simplify right side
    53,445x = 1,473,405,179.59
  5. Step 5: Solve for x
    x = 1,473,405,179.59/53,445
  6. Step 6: Final answer
    x = 27,568.63

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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.