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Finding the Fourth Proportional to 86,119.94, 118,855.35 and 47,883.29

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Solution

The fourth proportional to 86,119.94, 118,855.35 and 47,883.29 is: 66,084.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,119.94 : 118,855.35 = 47,883.29 : x
  2. Step 2: Convert to fraction form
    86,119.94/118,855.35 = 47,883.29/x
  3. Step 3: Cross multiply
    86,119.94x = 118,855.35 × 47,883.29
  4. Step 4: Simplify right side
    86,119.94x = 5,691,184,597.82
  5. Step 5: Solve for x
    x = 5,691,184,597.82/86,119.94
  6. Step 6: Final answer
    x = 66,084.40

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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.