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Finding the Fourth Proportional to 45,097.47, 67,659.18 and 13,509.90

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Solution

The fourth proportional to 45,097.47, 67,659.18 and 13,509.90 is: 20,268.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,097.47 : 67,659.18 = 13,509.90 : x
  2. Step 2: Convert to fraction form
    45,097.47/67,659.18 = 13,509.90/x
  3. Step 3: Cross multiply
    45,097.47x = 67,659.18 × 13,509.90
  4. Step 4: Simplify right side
    45,097.47x = 914,068,755.88
  5. Step 5: Solve for x
    x = 914,068,755.88/45,097.47
  6. Step 6: Final answer
    x = 20,268.74

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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.