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Finding the Fourth Proportional to 85,457.77, 117,934.10 and 47,219.78

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Solution

The fourth proportional to 85,457.77, 117,934.10 and 47,219.78 is: 65,164.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,457.77 : 117,934.10 = 47,219.78 : x
  2. Step 2: Convert to fraction form
    85,457.77/117,934.10 = 47,219.78/x
  3. Step 3: Cross multiply
    85,457.77x = 117,934.10 × 47,219.78
  4. Step 4: Simplify right side
    85,457.77x = 5,568,821,784.88
  5. Step 5: Solve for x
    x = 5,568,821,784.88/85,457.77
  6. Step 6: Final answer
    x = 65,164.61

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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.