Home / 78,054.12-117,086.40-27,447.06

Finding the Fourth Proportional to 78,054.12, 117,086.40 and 27,447.06

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Solution

The fourth proportional to 78,054.12, 117,086.40 and 27,447.06 is: 41,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,054.12 : 117,086.40 = 27,447.06 : x
  2. Step 2: Convert to fraction form
    78,054.12/117,086.40 = 27,447.06/x
  3. Step 3: Cross multiply
    78,054.12x = 117,086.40 × 27,447.06
  4. Step 4: Simplify right side
    78,054.12x = 3,213,677,445.98
  5. Step 5: Solve for x
    x = 3,213,677,445.98/78,054.12
  6. Step 6: Final answer
    x = 41,172.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.