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Finding the Fourth Proportional to 75,189.84, 112,808.48 and 45,236.86

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Solution

The fourth proportional to 75,189.84, 112,808.48 and 45,236.86 is: 67,869.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,189.84 : 112,808.48 = 45,236.86 : x
  2. Step 2: Convert to fraction form
    75,189.84/112,808.48 = 45,236.86/x
  3. Step 3: Cross multiply
    75,189.84x = 112,808.48 × 45,236.86
  4. Step 4: Simplify right side
    75,189.84x = 5,103,101,416.57
  5. Step 5: Solve for x
    x = 5,103,101,416.57/75,189.84
  6. Step 6: Final answer
    x = 67,869.56

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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.