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Finding the Fourth Proportional to 53,653.08, 80,480.08 and 20,364.21

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Solution

The fourth proportional to 53,653.08, 80,480.08 and 20,364.21 is: 30,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,653.08 : 80,480.08 = 20,364.21 : x
  2. Step 2: Convert to fraction form
    53,653.08/80,480.08 = 20,364.21/x
  3. Step 3: Cross multiply
    53,653.08x = 80,480.08 × 20,364.21
  4. Step 4: Simplify right side
    53,653.08x = 1,638,913,275.39
  5. Step 5: Solve for x
    x = 1,638,913,275.39/53,653.08
  6. Step 6: Final answer
    x = 30,546.49

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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.