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Finding the Fourth Proportional to 85,659.58, 118,208.79 and 47,418.32

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Solution

The fourth proportional to 85,659.58, 118,208.79 and 47,418.32 is: 65,436.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659.58 : 118,208.79 = 47,418.32 : x
  2. Step 2: Convert to fraction form
    85,659.58/118,208.79 = 47,418.32/x
  3. Step 3: Cross multiply
    85,659.58x = 118,208.79 × 47,418.32
  4. Step 4: Simplify right side
    85,659.58x = 5,605,261,853.06
  5. Step 5: Solve for x
    x = 5,605,261,853.06/85,659.58
  6. Step 6: Final answer
    x = 65,436.49

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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.