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Finding the Fourth Proportional to 85,753.29, 118,301.85 and 51,742.81

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Solution

The fourth proportional to 85,753.29, 118,301.85 and 51,742.81 is: 71,382.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.29 : 118,301.85 = 51,742.81 : x
  2. Step 2: Convert to fraction form
    85,753.29/118,301.85 = 51,742.81/x
  3. Step 3: Cross multiply
    85,753.29x = 118,301.85 × 51,742.81
  4. Step 4: Simplify right side
    85,753.29x = 6,121,270,295.08
  5. Step 5: Solve for x
    x = 6,121,270,295.08/85,753.29
  6. Step 6: Final answer
    x = 71,382.33

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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.