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Finding the Fourth Proportional to 85,212.35, 117,805.61 and 63,954.71

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Solution

The fourth proportional to 85,212.35, 117,805.61 and 63,954.71 is: 88,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212.35 : 117,805.61 = 63,954.71 : x
  2. Step 2: Convert to fraction form
    85,212.35/117,805.61 = 63,954.71/x
  3. Step 3: Cross multiply
    85,212.35x = 117,805.61 × 63,954.71
  4. Step 4: Simplify right side
    85,212.35x = 7,534,223,194.78
  5. Step 5: Solve for x
    x = 7,534,223,194.78/85,212.35
  6. Step 6: Final answer
    x = 88,417.04

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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.