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Finding the Fourth Proportional to 53,891.52, 80,837.76 and 18,856.32

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Solution

The fourth proportional to 53,891.52, 80,837.76 and 18,856.32 is: 28,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,891.52 : 80,837.76 = 18,856.32 : x
  2. Step 2: Convert to fraction form
    53,891.52/80,837.76 = 18,856.32/x
  3. Step 3: Cross multiply
    53,891.52x = 80,837.76 × 18,856.32
  4. Step 4: Simplify right side
    53,891.52x = 1,524,302,670.64
  5. Step 5: Solve for x
    x = 1,524,302,670.64/53,891.52
  6. Step 6: Final answer
    x = 28,284.65

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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.