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Finding the Fourth Proportional to 65,847.12, 90,869.04 and 36,039.12

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Solution

The fourth proportional to 65,847.12, 90,869.04 and 36,039.12 is: 49,733.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,847.12 : 90,869.04 = 36,039.12 : x
  2. Step 2: Convert to fraction form
    65,847.12/90,869.04 = 36,039.12/x
  3. Step 3: Cross multiply
    65,847.12x = 90,869.04 × 36,039.12
  4. Step 4: Simplify right side
    65,847.12x = 3,274,840,236.84
  5. Step 5: Solve for x
    x = 3,274,840,236.84/65,847.12
  6. Step 6: Final answer
    x = 49,733.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.