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Finding the Fourth Proportional to 53,652.40, 80,478.59 and 20,364.59

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Solution

The fourth proportional to 53,652.40, 80,478.59 and 20,364.59 is: 30,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,652.40 : 80,478.59 = 20,364.59 : x
  2. Step 2: Convert to fraction form
    53,652.40/80,478.59 = 20,364.59/x
  3. Step 3: Cross multiply
    53,652.40x = 80,478.59 × 20,364.59
  4. Step 4: Simplify right side
    53,652.40x = 1,638,913,489.13
  5. Step 5: Solve for x
    x = 1,638,913,489.13/53,652.40
  6. Step 6: Final answer
    x = 30,546.88

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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.