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Finding the Fourth Proportional to 53,770.64, 80,655.69 and 13,789.45

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Solution

The fourth proportional to 53,770.64, 80,655.69 and 13,789.45 is: 20,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,770.64 : 80,655.69 = 13,789.45 : x
  2. Step 2: Convert to fraction form
    53,770.64/80,655.69 = 13,789.45/x
  3. Step 3: Cross multiply
    53,770.64x = 80,655.69 × 13,789.45
  4. Step 4: Simplify right side
    53,770.64x = 1,112,197,201.19
  5. Step 5: Solve for x
    x = 1,112,197,201.19/53,770.64
  6. Step 6: Final answer
    x = 20,684.10

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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.