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Finding the Fourth Proportional to 85,643.73, 118,110.25 and 73,540.41

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Solution

The fourth proportional to 85,643.73, 118,110.25 and 73,540.41 is: 101,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,643.73 : 118,110.25 = 73,540.41 : x
  2. Step 2: Convert to fraction form
    85,643.73/118,110.25 = 73,540.41/x
  3. Step 3: Cross multiply
    85,643.73x = 118,110.25 × 73,540.41
  4. Step 4: Simplify right side
    85,643.73x = 8,685,875,859.21
  5. Step 5: Solve for x
    x = 8,685,875,859.21/85,643.73
  6. Step 6: Final answer
    x = 101,418.70

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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.