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Finding the Fourth Proportional to 86,221.94, 118,985.12 and 48,496.20

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Solution

The fourth proportional to 86,221.94, 118,985.12 and 48,496.20 is: 66,924.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,221.94 : 118,985.12 = 48,496.20 : x
  2. Step 2: Convert to fraction form
    86,221.94/118,985.12 = 48,496.20/x
  3. Step 3: Cross multiply
    86,221.94x = 118,985.12 × 48,496.20
  4. Step 4: Simplify right side
    86,221.94x = 5,770,326,176.54
  5. Step 5: Solve for x
    x = 5,770,326,176.54/86,221.94
  6. Step 6: Final answer
    x = 66,924.11

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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.