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Finding the Fourth Proportional to 75,066.81, 112,591.83 and 18,906.90

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Solution

The fourth proportional to 75,066.81, 112,591.83 and 18,906.90 is: 28,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,066.81 : 112,591.83 = 18,906.90 : x
  2. Step 2: Convert to fraction form
    75,066.81/112,591.83 = 18,906.90/x
  3. Step 3: Cross multiply
    75,066.81x = 112,591.83 × 18,906.90
  4. Step 4: Simplify right side
    75,066.81x = 2,128,762,470.63
  5. Step 5: Solve for x
    x = 2,128,762,470.63/75,066.81
  6. Step 6: Final answer
    x = 28,358.24

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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.