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Finding the Fourth Proportional to 85,753.30, 118,301.85 and 51,742.82

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Solution

The fourth proportional to 85,753.30, 118,301.85 and 51,742.82 is: 71,382.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.30 : 118,301.85 = 51,742.82 : x
  2. Step 2: Convert to fraction form
    85,753.30/118,301.85 = 51,742.82/x
  3. Step 3: Cross multiply
    85,753.30x = 118,301.85 × 51,742.82
  4. Step 4: Simplify right side
    85,753.30x = 6,121,270,738.71
  5. Step 5: Solve for x
    x = 6,121,270,738.71/85,753.30
  6. Step 6: Final answer
    x = 71,382.34

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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.